The Rarest Animals in the World: Species on the Brink

The rarest animals in the world are species with severely reduced populations whose continued existence depends on immediate, science-based intervention. This article examines several of these species, including the vaquita porpoise, Javan rhinoceros, Hainan gibbon, red handfish, Chinese crested tern, and crested ibis. For each species, we present current population estimates, primary threats, and the conservation actions being taken. The information here is intended for students, researchers, life-science professionals, and informed general readers who want to understand what makes a species rare, how rarity is measured, and what can be done to prevent extinction.

Defining Rarity in Conservation Science

Rarity in conservation biology involves more than low population numbers. A species may be considered rare because it has a restricted geographic range, a small population size, or specialized habitat requirements. Some species are naturally rare, while others have become rare due to human activities. Conservation scientists use standardized categories to assess extinction risk, most notably the International Union for Conservation of Nature (IUCN) Red List categories. These categories range from Least Concern to Critically Endangered, with Critically Endangered species facing the highest risk of extinction in the wild.

The IUCN Red List categories are based on multiple criteria, including population size, rate of population decline, geographic range size, and quantitative analysis of extinction probability. A species classified as Critically Endangered may have fewer than 250 mature individuals, a population decline of more than 80 percent over three generations, or a geographic range of less than 100 square kilometers. These thresholds help conservation managers prioritize limited resources toward species that need immediate intervention.

Population estimates for rare species are often difficult to obtain. For many marine species, direct observation is challenging, and scientists must rely on indirect methods such as mark-recapture studies, acoustic monitoring, or genetic sampling. For terrestrial species, camera traps, transect surveys, and fecal DNA analysis provide population data. Each method has limitations, and conservation decisions must account for uncertainty in population estimates.

The Vaquita: The World's Most Endangered Marine Mammal

The vaquita porpoise (Phocoena sinus) is widely recognized as the most endangered marine mammal in the world. This small porpoise species is endemic to the northern Gulf of California in Mexico, where it inhabits shallow, turbid waters. The vaquita has a restricted geographic range, which makes it particularly vulnerable to local threats.

The primary threat to the vaquita is bycatch in gillnets used for fishing. A global meta-analysis of gillnet bycatch of toothed whales estimated that approximately 50,000 odontocetes are caught annually in gillnets worldwide between 1990 and 2020. The analysis identified gillnet bycatch as a serious threat to long-lived and slow-reproducing species with heavy offspring investment, which describes the vaquita precisely. The study emphasized that addressing gillnet bycatch requires improved species and regional-based management strategies, including collaborations between fishers, fisheries managers, marine mammal experts, and marine spatial planners.

For the vaquita, the solution involves banning gillnets within its habitat and enforcing existing regulations. However, enforcement has been challenging due to the vast and difficult-to-access nature of the marine environment. Conservation efforts have included compensation programs for fishers, alternative fishing gear trials, and attempts at captive breeding. The vaquita population has declined to fewer than 20 individuals, and extinction risk remains extremely high without immediate and effective intervention.

The Javan Rhinoceros: A Single-Population Species

The Javan rhinoceros (Rhinoceros sondaicus) is one of the most critically endangered large mammals in the world. The species is protected under Indonesian law, listed in Appendix I of the Convention on International Trade in Endangered Species (CITES), and categorized as Critically Endangered on the IUCN Red List. The only viable wild population exists in Ujung Kulon National Park on the western tip of Java, Indonesia.

The Javan rhino faces numerous threats, including poaching, habitat destruction, and limited monitoring capabilities. Traditional conservation methods are often ineffective due to the vast and difficult-to-access nature of rhino habitats. Recent technological approaches have been proposed to enhance conservation efforts. One study of an integrated deep learning system for Javan rhino conservation described a hybrid deep learning framework that combines convolutional neural networks, recurrent neural networks, and graph neural networks for real-time rhino monitoring, poacher detection, and habitat preservation. The system uses camera trap images, drone footage, satellite images, bioacoustic recordings, and GPS tracking data to detect rhinos, poachers, and habitat changes. While this technology shows promise, it has not yet been deployed at scale.

Habitat management is another critical component of Javan rhino conservation. A study of plant diversity in the Javan Rhino and Conservation Area within Ujung Kulon National Park identified 241 plant species in the undeveloped area, including 89 species of rhino food plants. The study also identified protected and rare plant species that must be considered when planning conservation infrastructure. The proposed Javan Rhino Study and Conservation Area would require felling 2,221 trees, which raises concerns about habitat disturbance. Conservation managers must balance the need for research and monitoring infrastructure against the risk of further habitat degradation.

Climate change adds another layer of complexity to Javan rhino conservation. Vulnerability assessments have been developed to evaluate how climate change may affect the species and its habitat, and participatory adaptation measures have been proposed. These assessments consider factors such as sea level rise, changes in rainfall patterns, and increased frequency of extreme weather events, all of which could affect the rhino's food supply and habitat quality.

The Hainan Gibbon: The World's Rarest Primate

The Hainan gibbon (Nomascus hainanus) is the world's rarest primate species, with a population of fewer than 40 individuals confined to a single forest fragment on Hainan Island, China. Conservation practices for extremely small populations must be grounded in solid science to prevent extinction. A comprehensive study of Hainan gibbons conducted between March 2021 and December 2022, combined with long-term historical data from 2003 to 2024, examined energy intake and expenditure, reproductive parameters, and genetic diversity.

The study found that Hainan gibbons can obtain sufficient energy for growth and reproduction in their existing habitats. This finding is important because it suggests that habitat quality is not currently the limiting factor for population growth. The study also identified an additional D-loop haplotype, indicating that the current population is more genetically diverse than previously thought. However, recently formed adult male-female pairs are increasingly related, signaling a high risk for inbreeding within this small population.

The researchers highlighted an urgent need to expand available habitat by building corridors. Habitat corridors would allow gibbons to move between forest fragments, increasing access to food resources and reducing the likelihood of inbreeding. The study also emphasized the importance of genetic monitoring to track relatedness among individuals and guide breeding recommendations.

Inbreeding depression is a significant concern for small populations. Long runs of homozygosity, which are stretches of DNA where an individual has inherited identical genetic material from both parents, are reliable genomic markers of inbreeding depression. A new statistic called IDrisk has been developed to quantify how long runs of homozygosity together with heterozygosity in non-homozygous regions can predict the risk of inbreeding depression in a population. This statistic has been applied to 24 bird and mammal populations, providing critical information to guide conservation decisions where more direct measures of fitness are not available.

The Red Handfish: A Critically Endangered Marine Fish

The red handfish (Thymichthys politus) is a critically endangered coastal anglerfish known only from two fragmented populations in southeast Tasmania, Australia. This species is at a high risk of extinction due to low numbers, loss of habitat, and the impacts of climate change. Population estimates are required for effective conservation of many rare marine species, but can be difficult to obtain.

A study published in 2024 provided the first empirical population size estimates of red handfish. Researchers surveyed both local populations via underwater visual census on scuba over three years and used photographic mark-recapture techniques to estimate biological parameters. In 2020, the local adult population size was estimated to be 94 adults at one site and 7 adults at the other site, suggesting an estimated global population of 101 adults. Movement of individuals was extremely limited at 48.5 meters per year, meaning the species has very little capacity to disperse or escape local threats.

The study also found evidence of declining fish density, a declining proportion of juveniles, and increasing average fish size during the study period. These results provide a serious warning that red handfish are likely sliding toward extinction. The researchers highlighted the urgent need to expand efforts for ex situ captive breeding to bolster numbers in the wild and maintain captive insurance populations, and to protect vital habitat to safeguard the species' ongoing survival in the wild.

The red handfish example illustrates several important principles for rare species conservation. First, population estimates are essential for setting conservation targets and measuring progress. Second, species with limited mobility are particularly vulnerable to localized threats because they cannot relocate to safer areas. Third, captive breeding programs can serve as insurance against extinction while habitat protection and restoration are implemented.

The Chinese Crested Tern: The World's Rarest Tern

The Chinese crested tern (Thalasseus bernsteini) is known as the rarest tern in the world and has become critically endangered with a severely diminished population. Understanding its genetic diversity is crucial for conservation efforts. However, no genomic resource had been publicly reported for this species until recently.

A study published in 2025 discussed the first complete mitochondrial genome of the Chinese crested tern, assembled from an egg sample collected from a newly established breeding site on Yuksan Island, South Korea. The 16,737 base pair mitogenome contains 37 genes, including 13 protein-coding genes, 22 transfer RNAs, and two ribosomal RNAs, exhibiting a typical gene order of avian mitogenomes. Phylogenetic analyses based on mitogenomic data confirmed the phylogenetic relationships between the Chinese crested tern within the Laridae family and other Charadriiformes species.

The study also estimated the divergence timeline of the terns, highlighting the evolutionary events that shaped their lineage. These findings provide valuable genomic resources for future conservation genetic and phylogenetic studies of this critically endangered species, aiding in efforts to protect and manage dwindling populations.

The Chinese crested tern breeds on small islands off the coasts of China, South Korea, and possibly other countries in the region. Threats include egg collection, disturbance at breeding sites, and loss of nesting habitat. Conservation efforts have included protection of breeding islands, public awareness campaigns, and social attraction techniques that use decoys and recorded calls to encourage terns to nest in protected areas.

The Crested Ibis: A Bird Recovering from the Brink

The crested ibis (Nipponia nippon) is one of the rarest birds in the world, although its population has recovered significantly from a low point of seven individuals in the 1980s. The species usually forages in paddy fields and prefers to nest and breed near villages, which means it is greatly influenced by anthropogenic activities.

A study published in 2024 examined the pollution characteristics of heavy metals, antibiotics, and antibiotic resistance genes in crested ibises and their habitat. Researchers sampled the feces of crested ibises as well as their habitat environment samples. Results showed that the pollution characteristics of heavy metals, antibiotics, antibiotic resistance genes, and gut microbiota of crested ibis were more related to host lifestyle and habitats. Captive ibises had higher relative abundances of the total antibiotic resistance genes and tetracycline concentrations compared with feralization and wild ibises, while the heavy metal contents had shown the opposite result.

The concentrations of heavy metals in soil and water both exceeded background soil levels or surface water quality standards, suggesting multi-element contamination in the habitat. Ecological risk assessments of soils showed that the habitats of wild ibises were heavily and moderately contaminated by cadmium, which would possibly pose a threat to the health of ibises. The study also found that microbial compositions and residual antibiotics had the most significant effects on the gut microbiota of crested ibises.

This research highlights an important aspect of rare species conservation that is often overlooked: habitat quality includes the absence of harmful pollutants in addition to the availability of food and shelter. For species like the crested ibis that forage in agricultural landscapes, the use of antibiotics in livestock and the application of heavy metal-containing fertilizers can create health risks that undermine conservation efforts.

At a Glance: Population Estimates and Primary Threats

The following table summarizes population estimates and primary threats for several of the world's rarest animals. Population estimates are based on the most recent published studies and may change as new data become available.

Why Species Become Rare

Understanding why species become rare is essential for designing effective conservation interventions. The causes of rarity can be grouped into several categories, and most rare species face multiple threats simultaneously.

Habitat loss and fragmentation are the most common causes of species decline worldwide. When natural habitats are converted to agriculture, urban development, or other human uses, species lose the resources they need to survive. Fragmentation divides populations into smaller units that are more vulnerable to local extinction. The Hainan gibbon exemplifies this pattern, with a single remaining forest fragment supporting the entire wild population.

Overexploitation, including hunting, fishing, and collection, directly removes individuals from populations. The vaquita is threatened by bycatch in gillnets, while the Javan rhino faces poaching pressure for its horn. Even when exploitation is illegal, enforcement may be insufficient to prevent continued losses.

Pollution and contamination degrade habitat quality and can have direct health effects on wildlife. The crested ibis study demonstrated that heavy metals and antibiotics in agricultural landscapes can contaminate foraging habitats and affect the gut microbiota of birds. These sublethal effects may reduce reproductive success and increase susceptibility to disease.

Climate change is an emerging threat that affects species through multiple mechanisms. Rising temperatures, changing precipitation patterns, and increased frequency of extreme weather events can alter habitat suitability, disrupt food webs, and increase physiological stress. The red handfish is at high risk from climate change impacts, which may include warming waters and changes in prey availability.

Inbreeding depression is a particular concern for small populations. When population size declines, individuals are more likely to mate with close relatives, increasing the frequency of harmful recessive traits. The Hainan gibbon study found that recently formed adult male-female pairs are increasingly related, signaling a high risk for inbreeding. Genomic tools such as runs of homozygosity analysis can help conservation managers identify populations at risk of inbreeding depression and guide breeding recommendations.

Conservation Strategies for Rare Species

Conservation strategies for rare species must be tailored to the specific threats and biological characteristics of each species. Several general approaches have proven effective across different taxa.

Habitat protection and restoration are foundational conservation strategies. Protecting remaining habitat from further degradation is often the most cost-effective intervention, particularly for species with restricted ranges. Habitat restoration can expand available habitat and create corridors that connect fragmented populations. For the Hainan gibbon, building corridors to expand available habitat is an urgent priority.

Captive breeding programs serve as insurance against extinction and can provide individuals for reintroduction. The red handfish study highlighted the urgent need to expand efforts for ex situ captive breeding to bolster numbers in the wild and maintain captive insurance populations. Captive breeding programs must maintain genetic diversity to avoid the problems of inbreeding that affect wild populations.

Threat mitigation addresses the direct causes of population decline. For the vaquita, this means eliminating gillnet bycatch through fishing gear restrictions and enforcement. For the Javan rhino, this means anti-poaching patrols and habitat protection. Threat mitigation often requires collaboration with local communities who depend on the same resources.

Genetic monitoring provides information about population health that is not available from census data alone. Advances in genomic technology have made it possible to assess genetic diversity, detect inbreeding, and identify populations at risk of inbreeding depression. The IDrisk statistic, which quantifies how long runs of homozygosity together with heterozygosity in non-homozygous regions can predict the risk of inbreeding depression, provides critical information to guide conservation decisions.

Technological innovations are expanding the toolkit available to conservation managers. Camera traps, drone surveillance, bioacoustic monitoring, and satellite imagery can provide real-time data on species distribution, abundance, and threats. The proposed RhinoGuardNet system for Javan rhino conservation integrates multiple data sources to detect rhinos, poachers, and habitat changes, and to predict rhino movement for optimizing anti-poaching patrol routes.

Practical Assessment Steps for Conservation Planning

Conservation planning for rare species requires a systematic approach that integrates population data, threat assessment, and management options. The following steps provide a framework for conservation managers and researchers.

Step 1: Establish baseline population estimates. Use appropriate survey methods for the species and habitat. For marine species, consider mark-recapture studies, acoustic monitoring, or underwater visual census. For terrestrial species, consider camera traps, transect surveys, or fecal DNA analysis. Document the methods used and the uncertainty associated with each estimate.

Step 2: Identify and quantify threats. Conduct a thorough assessment of all potential threats, including habitat loss, overexploitation, pollution, climate change, and inbreeding. For each threat, estimate its current impact on the population and its likely future trajectory. Prioritize threats based on their severity and the feasibility of mitigation.

Step 3: Assess genetic health. Collect genetic samples from as many individuals as possible and analyze genetic diversity, relatedness, and runs of homozygosity. Use this information to identify inbreeding risk and to guide breeding recommendations for captive programs.

Step 4: Evaluate habitat quality and availability. Assess the availability of suitable habitat and identify factors that limit habitat quality, including food availability, contamination, and disturbance. For species that forage in agricultural landscapes, consider the impacts of pesticides, antibiotics, and heavy metals.

Step 5: Develop and implement conservation interventions. Based on the assessment, develop a conservation plan that addresses the most critical threats. Interventions may include habitat protection, threat mitigation, captive breeding, genetic management, and community engagement. Establish clear objectives and measurable indicators of success.

Step 6: Monitor and adapt. Implement a monitoring program to track population trends, threat levels, and the effectiveness of interventions. Use monitoring data to adapt management strategies as conditions change. Document lessons learned and share them with the conservation community.

Records and Measurements for Conservation Programs

Accurate record-keeping is essential for effective conservation management. The following records should be maintained for rare species conservation programs.

Population census data should include the date, location, method, and results of each survey. For mark-recapture studies, records should include individual identification information, capture and recapture dates, and estimated population size with confidence intervals.

Genetic data should include sample collection information, laboratory analysis results, and interpretations of genetic diversity and relatedness. Records should document the number of individuals sampled, the proportion of the population represented, and any changes in genetic metrics over time.

Threat monitoring records should document the type, location, and severity of each threat observed. For bycatch, records should include the number of animals caught, the fishing gear involved, and the location and timing of captures. For poaching, records should include the number of incidents, the methods used, and the outcomes of enforcement actions.

Captive breeding records should include individual identification, parentage, birth and death dates, health assessments, and breeding outcomes. These records are essential for managing genetic diversity and avoiding inbreeding in captive populations.

Habitat monitoring records should document changes in habitat quality and availability over time. For species that forage in agricultural landscapes, records should include contamination levels in soil and water, as well as the types and amounts of agricultural chemicals used in the area.

Common Failure Patterns in Rare Species Conservation

Conservation programs for rare species often fail despite good intentions and substantial investment. Understanding common failure patterns can help conservation managers avoid these pitfalls.

Delayed intervention is one of the most common failures. Conservation action often begins only after populations have declined to critically low levels, when the options for intervention are limited and the risk of extinction is high. The vaquita exemplifies this pattern, with conservation efforts struggling to keep pace with population decline.

Insufficient threat mitigation is another common failure. Conservation programs may focus on monitoring and research while failing to address the direct causes of population decline. For species threatened by bycatch or poaching, effective enforcement of regulations is essential but often difficult to achieve.

Inadequate genetic management can undermine conservation success. Small populations are vulnerable to inbreeding depression, and captive breeding programs must actively manage genetic diversity to avoid this problem. Failure to monitor genetic health can lead to reduced reproductive success and increased susceptibility to disease.

Lack of community engagement can doom conservation programs. When local communities depend on the same resources as rare species, conservation interventions that ignore community needs are unlikely to succeed. Successful programs engage local stakeholders in planning and implementation, and they provide alternative livelihoods where necessary.

Climate change can undermine conservation efforts even when other threats are addressed. Species that are adapted to specific climatic conditions may find their habitats unsuitable as temperatures and precipitation patterns change. Conservation planning must account for climate change and consider options such as assisted migration or habitat restoration in climate refugia.

Limitations of Current Knowledge

Our understanding of rare species is limited by several factors that conservation managers must acknowledge.

Population estimates for rare species are often imprecise. Many rare species are difficult to observe directly, and survey methods may miss individuals or double-count others. Confidence intervals around population estimates can be wide, making it difficult to detect population trends with confidence.

Genetic data are unavailable for many rare species. The Chinese crested tern had no publicly reported genomic resource until the recent mitogenome study. Without genetic data, conservation managers cannot assess inbreeding risk or make informed breeding recommendations.

Threat data are often incomplete. For many species, we do not know the relative importance of different threats or how threats interact. The global meta-analysis of gillnet bycatch of toothed whales noted that global gillnet bycatch numbers are unknown, with estimates greatest in Asia, East Africa, and the west coasts of North and South America.

Long-term monitoring data are lacking for most rare species. Conservation decisions often must be made with limited information about population trends, reproductive rates, and survival. The Hainan gibbon study combined field research with long-term historical data from 2003 to 2024, but such long-term datasets are rare.

Welfare and Safety Context

Conservation interventions for rare species raise important welfare and safety considerations that must be addressed.

Captive breeding programs must maintain high standards of animal welfare. Captive environments should provide appropriate space, nutrition, social opportunities, and veterinary care. The crested ibis study found that captive ibises had higher relative abundances of total antibiotic resistance genes and tetracycline concentrations compared with wild ibises, suggesting that captive environments may expose animals to antibiotics in ways that affect their health.

Field research and monitoring activities can disturb rare species and their habitats. Researchers should minimize disturbance by using non-invasive methods where possible, such as fecal DNA analysis or camera traps instead of capture and handling. When capture is necessary, protocols should minimize stress and ensure the safety of both animals and researchers.

Anti-poaching patrols and enforcement activities carry safety risks for conservation personnel. In some regions, poachers are armed and violent, and conservation workers may face threats to their safety. Organizations should provide appropriate training, equipment, and support for field personnel.

Community engagement activities should respect local cultures and livelihoods. Conservation interventions that restrict access to resources can create conflict, and programs should work with communities to develop solutions that meet both conservation and human needs.

Professional Escalation Criteria

Conservation managers should escalate concerns to higher authorities or specialized experts when certain conditions are met.

If population estimates indicate a decline of more than 20 percent over one generation or a total population below 50 mature individuals, escalate to the relevant national wildlife authority and international conservation organizations. These thresholds indicate that the species is at imminent risk of extinction and may require emergency interventions.

If genetic monitoring reveals that the effective population size is below 50 or that average relatedness among potential breeding pairs is increasing, escalate to conservation geneticists for guidance on genetic management. Inbreeding depression can rapidly reduce population viability, and expert advice is needed to develop breeding recommendations.

If new threats are identified that were not considered in the conservation plan, escalate to the appropriate authorities. For example, if contamination levels in habitat exceed regulatory standards, escalate to environmental protection agencies. If bycatch of protected species is observed, escalate to fisheries management authorities.

If conservation interventions are not achieving their objectives within the planned timeframe, escalate to program funders and governing bodies. Adaptive management requires honest assessment of progress and willingness to change strategies when current approaches are not working.

If there is a risk of human-wildlife conflict or safety incidents, escalate to local authorities and community leaders. Conservation programs must prioritize the safety of both people and animals, and conflicts should be addressed before they escalate.

Frequently Asked Questions

Are pandas endangered?

Giant pandas are no longer classified as Endangered on the IUCN Red List. They were reclassified to Vulnerable in 2016 following successful conservation efforts in China. The panda population has increased due to habitat protection and captive breeding programs, although the species remains dependent on continued conservation investment.

Are elephants endangered?

Elephant conservation status varies by species. African savanna elephants are classified as Endangered, while African forest elephants are classified as Critically Endangered. Asian elephants are classified as Endangered. The primary threats to all elephant species are poaching for ivory, habitat loss, and human-elephant conflict.

What is the rarest animal in the world?

The vaquita porpoise is widely considered the rarest marine mammal, with fewer than 20 individuals remaining. Among primates, the Hainan gibbon is the rarest, with fewer than 40 individuals. The red handfish has an estimated global population of approximately 101 adults. Rarity can be measured by population size, geographic range, or a combination of factors.

How do scientists count rare animals?

Scientists use various methods depending on the species and habitat. For marine species, methods include underwater visual census, photographic mark-recapture, and acoustic monitoring. For terrestrial species, methods include camera traps, transect surveys, and fecal DNA analysis. Each method has limitations, and population estimates often include confidence intervals to reflect uncertainty.

Why is genetic diversity important for rare species?

Genetic diversity allows populations to adapt to changing environmental conditions and reduces the risk of inbreeding depression. When populations become small, genetic diversity is lost, and individuals are more likely to mate with close relatives. This can reduce reproductive success, increase susceptibility to disease, and decrease the ability to adapt to environmental changes.

What is inbreeding depression?

Inbreeding depression is the reduced fitness that results from mating between closely related individuals. It occurs because harmful recessive traits become more likely to be expressed when individuals inherit identical genetic material from both parents. Long runs of homozygosity are reliable genomic markers of inbreeding depression, and new statistics such as IDrisk can predict the risk of inbreeding depression in populations.

Can captive breeding save rare species from extinction?

Captive breeding can serve as insurance against extinction and provide individuals for reintroduction, but it is not a substitute for habitat protection. The red handfish study highlighted the urgent need to expand captive breeding efforts to bolster numbers in the wild and maintain captive insurance populations. Captive breeding programs must maintain genetic diversity and prepare animals for survival in the wild.

What can individuals do to help rare species?

Individuals can support conservation organizations that work to protect rare species and their habitats. They can also reduce their environmental impact by choosing sustainable products, reducing waste, and supporting policies that protect biodiversity. Public awareness and education are important for building support for conservation, as demonstrated by the development of virtual reality educational tools for Javan rhino conservation.

Related Articles

• Animal Biology
• Animal Research
• Primary Structure Of Protein
• Primary Structure Of Protein
• Primary Structure Of Protein

References and Further Reading

• NCBI Literature Resources. National Center for Biotechnology Information.
• PubMed. National Library of Medicine.
• Population parameters and conservation implications for one of the world's rarest marine fishes, the red handfish (Thymichthys politus).. Journal of fish biology, 2024.
• Pollution characteristics of heavy metals, antibiotic and antibiotic resistance genes in the crested ibis and their habitat across different lifestyle and geography.. Environmental research, 2024.
• Complete mitochondrial genome of the world's most endangered tern, Thalasseus bernsteini, and a mitogenomic phylogenetic study of the Laridae family.. Scientific reports, 2025.
• Science-based suggestions to save the world's rarest primate species Nomascus hainanus.. Science advances, 2025.
• Seis-ing up the Super- Morrison formation sauropods.. Journal of anatomy, 2025.
• Global Avian Functional Diversity Depends on the World's Most Widespread and Distinct Birds.. Ecology letters, 2024.
• A global meta-analysis of gillnet bycatch of toothed whales: Mitigation measures and research gaps.. 2024.
• Long runs of homozygosity are reliable genomic markers of inbreeding depression.. 2025.
• Organisation and evolution of the major histocompatibility complex class I genes in cetaceans.. 2024.
• RhinoGuardNet: An Integrated Deep Learning System for Monitoring, Movement Prediction, and Threat Detection in Javan Rhino Conservation. 2025 International Conference on Machine Learning and Autonomous Systems (ICMLAS), 2025.
• Study of Plant Diversity in the Javan Rhino and Conservation Area (JRSCA), Ujung Kulon National Park. Media Konservasi, 2024.
• The Design of 3D Virtual Reality Animation of Javan Rhino for Educational Media of Endangered Animals in Indonesia. Teknika, 2024.
• Criteria and indicators for assessing vulnerability to climate change and developing participatory adaptation measures : Javan rhino conservation, Ujung Kulon National Park, Indonesia. 2010.
• STUDI KELAYAKAN EKONOMI TEKNIK PROYEK EKOWISATASTUDI KASUS PENGEMBANGAN JAVAN RHINO STUDY ANDCONSERVATION AREA (JRSCA) TAMAN NASIONAL UJUNG KULON. 2019.
• Conservation Plan for the Javan Rhino. 2015.

This article is educational and does not replace institutional policy, professional advice, or applicable safety and regulatory requirements.