Elephas maximus sumatranus
A large herbivore that disperses seeds and shapes forests. Its conservation needs connected movement space and solutions developed with communities living nearby.
PANDUANHEWAN · INDONESIA
Indonesia’s fauna zones: Asian, Wallacean and Australian
How Indonesia’s animals are distributed across the Wallace and Weber lines, with features and examples of Asian, Wallacean and Australian fauna.
Indonesia's three faunal zones
In Indonesian geography lessons, land animals are grouped into three zones: Asian-type (Asiatis) fauna in the west, transitional (peralihan) fauna in the middle and Australian-type (Australis) fauna in the east. The split follows the country's geology: the Sunda shelf in the west, a transition area in the middle and the Sahul shelf in the east.
The boundaries are drawn as imaginary lines: Wallace's line, Weber's line and Lydekker's line. Alfred Russel Wallace published the first line in 1863, based on where land mammals and land birds live. Scientists soon realised that every such line is leaky to some degree, which led to the idea of a transition zone, now called Wallacea.
Evidence: Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗ · Ali & Heaney (2021) Wallace's line, Wallacea, and associated divides and areas: history of a tortuous tangle of ideas and labels. Biological Reviews 96: 922-942 (abstract) ↗ · Struebig et al. (2022) Safeguarding imperiled biodiversity and evolutionary processes in the Wallacea center of endemism. BioScience 72(11): 1118-1130 ↗
Wallace's line: from the Lombok Strait to the Makassar Strait
Wallace's line marks the boundary between the Oriental (Asian) and Australian faunal regions. From the Indian Ocean it runs through the Lombok Strait between Bali and Lombok, north through the Makassar Strait between Borneo and Sulawesi, then east, south of Mindanao, into the Philippine Sea. The Indonesian education ministry's geography module describes its northern part as crossing the Celebes Sea through the gap between Mindanao and the Sangihe Islands.
Wallace saw a sharp change across the Lombok Strait. He wrote that Bali has barbets, fruit-thrushes and woodpeckers, but on Lombok these disappear and cockatoos, honeyeaters and brush-turkeys (megapodes) take their place.
There is more than one version of the line. T. H. Huxley (1868) moved its northern part to the west of the Philippines, leaving Palawan on the Asian side. In 1910 Wallace himself moved his line from the west side of Sulawesi to the east side.
Evidence: Britannica: Wallace Line (archived snapshot, 5 Jan 2026) ↗ · Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗ · Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗ · Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Ali & Heaney (2021) Wallace's line, Wallacea, and associated divides and areas: history of a tortuous tangle of ideas and labels. Biological Reviews 96: 922-942 (abstract) ↗ · Natural History Museum, London: Who was Alfred Russel Wallace? ↗
Weber's line: the line of faunal balance
Weber's line, named after Max Weber, is a line of faunal balance: around it, Asian and Australian elements are roughly equal (50:50). To the west, more than half of the fauna is Asian in character; to the east, more than half is Australian.
Britannica places Weber's line to the west of the Maluku Islands. In line with this, some school modules use Weber's line to separate Maluku and Papua in the east from the rest of Indonesia.
Evidence: Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Kemendikbud, Direktorat Pembinaan SMA (2018) e-Modul Persebaran Flora-Fauna di Indonesia dan Dunia (Geografi Kelas XI KD 3.2) ↗ · Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗
Lydekker's line: the edge of the Sahul shelf
Lydekker's line follows the edge of the Sahul shelf, the continental shelf of Australia and New Guinea. It runs west of New Guinea (Papua) and north of Australia. West of it lies the Wallacea transition zone; east of it are Australian-type plants and animals.
Lydekker published the line in 1896. Some specialists suggest calling it the Heilprin-Lydekker line, because Angelo Heilprin proposed a similar divide in 1887.
Evidence: Britannica: Lydekker's Line (archived snapshot, 15 Oct 2025) ↗ · Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Doorenweerd et al. (2020) The Dacini fruit fly fauna of Sulawesi fits Lydekker's line but also supports Wallacea as a biogeographic region. ZooKeys ↗ · Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗ · Ali & Heaney (2021) Wallace's line, Wallacea, and associated divides and areas: history of a tortuous tangle of ideas and labels. Biological Reviews 96: 922-942 (abstract) ↗
Which islands belong to which zone?
Asian zone (Sunda shelf): Sumatra, Java, Kalimantan (Indonesian Borneo) and Bali, plus nearby small islands. Its eastern limit is Wallace's line, so Bali is still in the Asian zone while Lombok is already in the transition zone.
Transition zone (Wallacea): Sulawesi, the Nusa Tenggara (Lesser Sunda) islands from Lombok eastward including Timor, and the Maluku Islands. Scientists include Sulawesi, Maluku, Nusa Tenggara and Timor-Leste in Wallacea, the area between Wallace's line and Lydekker's line.
Australian zone (Sahul shelf): Papua, the Aru Islands and nearby small islands. Wallace (1863) noted that the Aru Islands, Misool and Waigeo share their mammals and birds with New Guinea far more than with Maluku, because a shallow sea links them to New Guinea.
Evidence: Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗ · Kemendikbud, Direktorat Pembinaan SMA (2018) e-Modul Persebaran Flora-Fauna di Indonesia dan Dunia (Geografi Kelas XI KD 3.2) ↗ · Britannica: Wallace Line (archived snapshot, 5 Jan 2026) ↗ · Struebig et al. (2022) Safeguarding imperiled biodiversity and evolutionary processes in the Wallacea center of endemism. BioScience 72(11): 1118-1130 ↗ · Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗
Where do Maluku and the Aru Islands belong?
School books do not agree on Maluku. The education ministry's 2020 module puts the Maluku Islands in the transition zone, while its 2018 module groups Maluku with Papua east of Weber's line. Biogeographers generally include Maluku in Wallacea, although Britannica notes that the faunal links of the Moluccas are clearly with New Guinea.
The Aru Islands are a special case. Administratively, Aru is a regency of Maluku Province, but the islands rise from the Sahul shelf. In the faunal division, Aru therefore belongs to the Australian zone together with Papua.
Evidence: Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗ · Kemendikbud, Direktorat Pembinaan SMA (2018) e-Modul Persebaran Flora-Fauna di Indonesia dan Dunia (Geografi Kelas XI KD 3.2) ↗ · Struebig et al. (2022) Safeguarding imperiled biodiversity and evolutionary processes in the Wallacea center of endemism. BioScience 72(11): 1118-1130 ↗ · Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Portal resmi Pemerintah Kabupaten Kepulauan Aru ↗ · Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗
Features of Asian-type (Asiatis) fauna
Asian-type fauna resembles the fauna of mainland Asia. Its most obvious feature is large placental mammals. Wallace (1863) gave the elephant and tapir of Sumatra, the rhinoceroses of Sumatra and Java, and the wild cattle of Borneo as examples.
Other typical groups are great apes and gibbons, such as orangutans in Sumatra and Borneo and the siamang in Sumatra, and big cats such as the Sumatran tiger. Britannica lists the gibbon family (Hylobatidae) and the treeshrew family (Tupaiidae) among the families endemic to the Oriental region.
Evidence: Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗ · Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Britannica: orangutan (archived snapshot, 26 Dec 2025) ↗ · Britannica: siamang (archived snapshot, 18 Sep 2025) ↗ · Britannica: tiger (archived snapshot, 28 Dec 2025) ↗ · Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗
Features of transitional (peralihan) fauna
Transitional fauna is the fauna of Wallacea, the meeting point of Asian and Australian animals. Its features are a mix of Asian and Australian groups and one of the highest levels of endemism in the world: Wallacea has 62 endemic vertebrate genera.
Sulawesi is the clearest example. At least 61 of its 63 non-flying land mammal species are endemic. It has animals of Asian descent, such as the anoa (related to native bovids of the Philippines and East Asia) and seven species of Macaca, a monkey genus whose members are almost all Asian. Yet the same island is home to the bear cuscus, a marsupial from the Australasian group.
Other iconic animals are the babirusa and the maleo of Sulawesi, and the Komodo dragon of Komodo Island and a few neighbouring islands in the Lesser Sundas (Nusa Tenggara).
Evidence: Struebig et al. (2022) Safeguarding imperiled biodiversity and evolutionary processes in the Wallacea center of endemism. BioScience 72(11): 1118-1130 ↗ · Frantz et al. (2018) Synchronous diversification of Sulawesi's iconic artiodactyls driven by recent geological events. Proc. R. Soc. B 285: 20172566 ↗ · Britannica: macaque (archived snapshot, 5 Dec 2025) ↗ · Animal Diversity Web (University of Michigan): Ailurops ursinus, bear cuscus ↗ · Britannica: cuscus (archived snapshot, 19 Jul 2025) ↗ · Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Britannica: Komodo dragon (archived snapshot, 6 Jan 2026) ↗ · Indonesia.go.id (Portal Informasi Indonesia, 18 Dec 2020): Melestarikan Maleo yang Hanya Ada di Sulawesi (archived snapshot) ↗
Features of Australian-type (Australis) fauna
Australian-type fauna resembles the fauna of Australia. Britannica places New Guinea, including Papua, in the Australian region and describes New Guinea's fauna as the rainforest side of Australian fauna.
Its features are many marsupials, such as cuscuses and tree-kangaroos, and typical birds such as cassowaries and birds-of-paradise. Britannica lists cassowaries (Casuariiformes) and birds-of-paradise (Paradisaeidae) as groups endemic to the Australian region. Wallace (1863) noted that Australia has no apes, monkeys, cats or tigers, and instead has marsupials such as kangaroos and opossums.
Evidence: Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗ · Britannica: cuscus (archived snapshot, 19 Jul 2025) ↗ · Kemendikbud, Direktorat Pembinaan SMA (2018) e-Modul Persebaran Flora-Fauna di Indonesia dan Dunia (Geografi Kelas XI KD 3.2) ↗ · Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗ · Britannica: cassowary (archived snapshot, 28 Dec 2025) ↗ · Britannica: bird-of-paradise (archived snapshot, 29 Dec 2025) ↗
Why do these lines exist?
The key is sea depth. The Asian zone sits on the Sunda shelf, a continental shelf joined to Asia. Wallace (1863) noted that the seas linking Java, Sumatra and Borneo with the Malay Peninsula and Siam are under 50 fathoms (about 90 metres) deep. Papua and the Aru Islands sit on the Sahul shelf, which is joined to Australia.
During the Pleistocene ice ages, glaciation lowered sea levels, and the islands of the Sunda shelf were repeatedly joined to mainland Asia. Voris (2000) mapped ancient shorelines for sea levels 75, 100 and 120 metres below today's. The lowest levels lasted only relatively short periods, but for more than half of each period Voris studied, sea level was at least 40 metres below today's.
The islands of Wallacea were never joined to the Sunda or Sahul shelves; deep trenches and straits have separated them for at least the last 23 million years. Wallace's line also marks where many fish, bird and mammal groups are abundant on one side but scarce or absent on the other.
Evidence: Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗ · Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗ · Kemendikbud, Direktorat Pembinaan SMA (2018) e-Modul Persebaran Flora-Fauna di Indonesia dan Dunia (Geografi Kelas XI KD 3.2) ↗ · Voris (2000) Maps of Pleistocene sea levels in Southeast Asia: shorelines, river systems and time durations. Journal of Biogeography 27: 1153-1167 (abstract) ↗ · Field Museum: Pleistocene sea level maps (H. K. Voris) ↗ · Doorenweerd et al. (2020) The Dacini fruit fly fauna of Sulawesi fits Lydekker's line but also supports Wallacea as a biogeographic region. ZooKeys ↗ · Struebig et al. (2022) Safeguarding imperiled biodiversity and evolutionary processes in the Wallacea center of endemism. BioScience 72(11): 1118-1130 ↗ · Britannica: Wallace Line (archived snapshot, 5 Jan 2026) ↗
Lines, not walls
Many zoogeographers no longer treat Wallace's line as a strict regional boundary. Even so, it still marks a sharp distribution limit for many major animal groups.
Researchers have not agreed on exactly where the lines and zones should run, even with modern analytical methods. That is not surprising, because each group of organisms has its own history of spread. A 2021 review by Ali and Heaney also notes that much secondary literature portrays these lines incorrectly, so each line should be cited according to its original definition.
Evidence: Britannica: Wallace Line (archived snapshot, 5 Jan 2026) ↗ · Ali & Heaney (2021) Wallace's line, Wallacea, and associated divides and areas: history of a tortuous tangle of ideas and labels. Biological Reviews 96: 922-942 (abstract) ↗
Examples of asian (sundaic) fauna
Panthera tigris sondaica
The last surviving Sunda Island tiger population lives in Sumatra. Protecting forest, prey, and movement routes supports a whole living landscape.
Rhinoceros sondaicus
A one-horned rhinoceros with a single surviving wild population in Ujung Kulon. Strong protection and careful habitat management underpin its future.
Tapirus indicus
The black-and-white tapir is Asia’s only tapir. Forest, water, and safe movement space support its life in Sumatra.
Pongo pygmaeus
A great ape of Borneo’s forests, including Kalimantan’s peat swamps. Population diversity and connections between habitats are central to its conservation.
Symphalangus syndactylus
The largest gibbon, with a throat sac that amplifies its calls. Group life connects communication, infant care, and connected forest.
- Sumatran elephant: The Asian elephant is a large mammal of mainland Asia with its own subspecies on Sumatra, and Wallace (1863) named the Sumatran elephant as an example of the large mammals of the Indo-Malayan region.
- Sumatran tiger: The tiger ranges from the Russian Far East to the Indonesian island of Sumatra, so the Sumatran tiger is an Asian big cat at the southern edge of that range.
- Javan rhinoceros: Wallace (1863) named the rhinoceros of Sumatra and its relative on Java as examples of the large mammals of the Indo-Malayan region.
- Malayan tapir: The Malayan tapir is the only tapir in Southeast Asia, and Wallace (1863) listed the tapir of Sumatra as an example of Asian fauna.
- Bornean orangutan: Orangutans are Asian great apes found only in Sumatra and Borneo, both west of Wallace's line.
- Siamang: The siamang belongs to the gibbon family (Hylobatidae), a family endemic to the Oriental region, and lives in Sumatra and the Malay Peninsula.
Examples of transitional (wallacean) fauna
Varanus komodoensis
The largest living lizard, native to a small group of islands in East Nusa Tenggara. Explore its links with prey, dry habitats, and island-specific conservation.
Bubalus depressicornis
A small buffalo relative from Sulawesi and Buton. Forest life, water sources, and hunting pressures are central to the anoa’s conservation story.
Babyrousa celebensis
A Sulawesi wild pig whose males have upper tusks curving through the snout’s skin. This profile distinguishes it from babirusas on other islands.
Macrocephalon maleo
A Sulawesi bird that uses environmental heat to incubate its eggs. Its survival connects forest living areas with highly specialised nesting grounds.
Ailurops ursinus
A tree-dwelling marsupial of Sulawesi. Leaves, connected canopy, and low human disturbance matter to this often slow-moving forest animal.
Macaca nigra
The crested black macaque is a distinctive North Sulawesi primate. Tangkoko field studies connect fruit availability, ranging and the future of its forest habitat.
- Komodo dragon: The Komodo dragon lives only on Komodo and a few neighbouring Lesser Sunda islands, and is cited as one of Wallacea's iconic animals.
- Lowland anoa: The anoa is a dwarf buffalo endemic to Sulawesi, related to native bovids of the Philippines and East Asia: an Asian lineage that became a Wallacean speciality.
- Sulawesi babirusa: Babirusas live on Sulawesi and nearby islands and are cited as one of Wallacea's iconic oddities.
- Maleo: The maleo is found only on Sulawesi and is cited as an iconic animal of the Wallacea centre of endemism.
- Sulawesi bear cuscus: The bear cuscus is a marsupial found only on Sulawesi and the Talaud Islands: an Australasian element living alongside animals of Asian origin.
- Crested black macaque: The crested black macaque is one of seven Macaca species on Sulawesi; almost all members of the genus are Asian, so it shows the Asian element in the transition zone.
Examples of australian (sahulian) fauna
Paradisaea apoda
The greater bird-of-paradise (Paradisaea apoda) is a yellow-plumed bird-of-paradise of the Aru Islands and the southern lowlands of New Guinea.
Paradisaea rubra
A forest bird of Raja Ampat whose males carry red plumes and two long tail ribbons. Its striking displays connect birdwatching with forest conservation.
Casuarius casuarius
A large flightless bird that disperses seeds through its feeding. This profile concerns Casuarius casuarius, one of the cassowary species in the New Guinea region.
Probosciger aterrimus
The palm cockatoo (Probosciger aterrimus) is a large black cockatoo with red cheek patches from New Guinea and the Aru Islands, known for drumming.
Spilocuscus papuensis
Waigeo Spotted Cuscus (Spilocuscus papuensis). The Waigeo spotted cuscus is a marsupial native to Waigeo Island; outlying records need scrutiny before being treated as natural range.
Carettochelys insculpta
The pig-nosed turtle (Carettochelys insculpta) is a flipper-limbed freshwater turtle of southern Papua, threatened by egg harvest and hatchling smuggling.
- Greater bird-of-paradise: Wallace (1857) recorded the greater bird-of-paradise as confined to New Guinea and the Aru Islands, and birds-of-paradise (Paradisaeidae) are a family endemic to the Australian region.
- Red bird-of-paradise: The red bird-of-paradise is endemic to Waigeo and Batanta in Raja Ampat; Wallace (1863) noted that Waigeo is linked to New Guinea by a shallow sea.
- Southern cassowary: The southern cassowary lives in New Guinea, nearby islands and Australia, and cassowaries (Casuariiformes) are endemic to the Australian region.
- Palm cockatoo: The palm cockatoo lives in New Guinea, the Aru Islands and north-eastern Australia, so its range follows the Sahul shelf.
- Waigeo Spotted Cuscus: The Waigeo cuscus is a marsupial (family Phalangeridae) endemic to Waigeo and Gam in Raja Ampat, an example of typical Australasian marsupials.
- Pig-nosed turtle: The pig-nosed turtle lives only in the southern lowlands of New Guinea and the rivers of northern Australia, two landmasses on the Sahul shelf.
Common questions
How is Indonesia's fauna distributed according to Wallace's line and Weber's line?
Wallace's line (from the Lombok Strait to the Makassar Strait) separates the Asian-type fauna of Sumatra, Java, Kalimantan and Bali from the transitional fauna to the east. Weber's line, west of Maluku, is a line of balance: to its west Asian-type animals are the majority, to its east Australian-type animals are. The area between Wallace's line and Lydekker's line is Wallacea (Sulawesi, Nusa Tenggara, Maluku), while Papua and the Aru Islands have Australian-type fauna.
What are examples of Asian-type (Asiatis) fauna?
Examples are the Sumatran elephant, Sumatran tiger, Javan rhinoceros, Malayan tapir, orangutans, the siamang and the banteng. They live in Sumatra, Java, Kalimantan or Bali, west of Wallace's line, and are related to animals of mainland Asia.
What is transitional (peralihan) fauna?
Transitional fauna is the fauna of Wallacea (Sulawesi, Nusa Tenggara and Maluku), the area between Wallace's line and Lydekker's line. It mixes Asian and Australian groups and has many endemic species, such as anoas, babirusas, the maleo, the bear cuscus and the Komodo dragon.
What are the features of Australian-type (Australis) fauna?
Australian-type fauna resembles Australia's: many marsupials such as cuscuses and tree-kangaroos, and typical birds such as cassowaries and birds-of-paradise. In Indonesia it is found in Papua, the Aru Islands and nearby small islands on the Sahul shelf.
What does Wallace's line separate, and what is Weber's line?
Wallace's line separates the Asian (Oriental) faunal region from the transitional and Australian fauna; in Indonesia it runs between Bali and Lombok and between Borneo and Sulawesi. Weber's line is a line of faunal balance west of Maluku, where Asian and Australian elements are roughly equal.
Sources
- Britannica: Wallace Line (archived snapshot, 5 Jan 2026) ↗
- Britannica (C. P. Groves): Biogeographic region - Oriental region, Wallacea, Notogaean and Australian regions (archived snapshot, 7 Sep 2025) ↗
- Britannica: Lydekker's Line (archived snapshot, 15 Oct 2025) ↗
- Ali & Heaney (2021) Wallace's line, Wallacea, and associated divides and areas: history of a tortuous tangle of ideas and labels. Biological Reviews 96: 922-942 (abstract) ↗
- Doorenweerd et al. (2020) The Dacini fruit fly fauna of Sulawesi fits Lydekker's line but also supports Wallacea as a biogeographic region. ZooKeys ↗
- Struebig et al. (2022) Safeguarding imperiled biodiversity and evolutionary processes in the Wallacea center of endemism. BioScience 72(11): 1118-1130 ↗
- Frantz et al. (2018) Synchronous diversification of Sulawesi's iconic artiodactyls driven by recent geological events. Proc. R. Soc. B 285: 20172566 ↗
- Voris (2000) Maps of Pleistocene sea levels in Southeast Asia: shorelines, river systems and time durations. Journal of Biogeography 27: 1153-1167 (abstract) ↗
- Field Museum: Pleistocene sea level maps (H. K. Voris) ↗
- Wallace (1863) On the physical geography of the Malay Archipelago. J. Royal Geographical Society 33 (full text, Wallace Page, Western Kentucky University) ↗
- Wallace (1857) On the great bird of paradise, Paradisea apoda (full text, Wallace Page, Western Kentucky University) ↗
- Natural History Museum, London: Who was Alfred Russel Wallace? ↗
- Kemendikbud, Direktorat SMA (2020) Modul Geografi Kelas XI KD 3.2 dan 4.2: Persebaran flora dan fauna ↗
- Kemendikbud, Direktorat Pembinaan SMA (2018) e-Modul Persebaran Flora-Fauna di Indonesia dan Dunia (Geografi Kelas XI KD 3.2) ↗
- Portal resmi Pemerintah Kabupaten Kepulauan Aru ↗
- Britannica: cassowary (archived snapshot, 28 Dec 2025) ↗
- Britannica: palm cockatoo (archived snapshot, 13 Jun 2025) ↗
- Britannica: cuscus (archived snapshot, 19 Jul 2025) ↗
- Britannica: Komodo dragon (archived snapshot, 6 Jan 2026) ↗
- Britannica: babirusa (archived snapshot, 11 Oct 2025) ↗
- Britannica: tapir (archived snapshot, 8 Jan 2026) ↗
- Britannica: siamang (archived snapshot, 18 Sep 2025) ↗
- Britannica: tiger (archived snapshot, 28 Dec 2025) ↗
- Britannica: Asian elephant (archived snapshot, 12 Dec 2025) ↗
- Britannica: macaque (archived snapshot, 5 Dec 2025) ↗
- Britannica: orangutan (archived snapshot, 26 Dec 2025) ↗
- Britannica: bird-of-paradise (archived snapshot, 29 Dec 2025) ↗
- Animal Diversity Web (University of Michigan): Ailurops ursinus, bear cuscus ↗
- Animal Diversity Web (University of Michigan): Carettochelys insculpta, pig-nosed turtle ↗
- IPB University (Aug 2026): Waigeo cuscus on a fallen tree - habitat loss for Papua's endemic species ↗
- Handbook of the Mammals of the World vol. 5 (2015): Spilocuscus papuensis account (Zenodo) ↗
- Britannica: banteng (archived snapshot, 26 Aug 2025) ↗
- Indonesia.go.id (Portal Informasi Indonesia, 18 Dec 2020): Melestarikan Maleo yang Hanya Ada di Sulawesi (archived snapshot) ↗
- Budhiana et al. (2025) Environmental factors influencing lek site selection in the red bird of paradise (Paradisaea rubra) in Raja Ampat. Biodiversitas 26 ↗
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