The Daintree Rainforest is a tract of roughly 1,200 km² (460 sq mi) of tropical rainforest on the northeastern coast of Queensland, Australia, running from the Daintree River north to Cooktown and from the Coral Sea coast west to the Great Dividing Range, about 105 km by road north of Cairns. It belongs to the Wet Tropics of Queensland, listed as a UNESCO World Heritage Site in 1988, and the rainforest communities it belongs to are put at around 180 million years old. What defines it is its wildlife: about 3,000 plant species, the endangered southern cassowary, Bennett's tree-kangaroo, the primitive ribbonwood tree Idiospermum, and roughly 430 bird species, all packed into 0.12% of Australia's land area.
The figures behind that last claim come from surveys summarised for the region: the Daintree holds around 30% of Australia's frog, reptile and marsupial species, 90% of its bat and butterfly species, 7% of its bird species and more than 12,000 insect species. One hectare of lowland forest can hold 100 to 150 tree species out of the 900 or so recorded. The sections below follow those animals and plants to the places where they live, from the beaches of Cape Tribulation to the granite summit of Thornton Peak.
The Southern Cassowary Between Cape Tribulation and Cooktown
The animal most closely tied to the Daintree is the southern cassowary (Casuarius casuarius), a flightless ratite related to the emu. Adults typically stand 1.5 to 1.8 m tall; females are larger than males and can weigh up to 76 kg, and the inner toe of each foot carries a dagger-like claw up to 12 cm long. In Australia the species prefers forest below 1,100 m, which in the Daintree means the coastal lowlands between the Daintree River and Cape Tribulation, where rainforest runs down to the beach.
Cassowaries forage on the forest floor for fallen fruit and can safely digest some fruits and seeds that are toxic to other animals; they also eat fungi, snails, frogs and small mammals. Their numbers are small. A 2002 study put the Australian population at 1,500 to 2,500 birds, and when the federal government published a draft recovery plan in June 2023 it estimated around 5,000. The Australian population is listed as Endangered under the federal EPBC Act; Queensland's November 2022 list treats the southern population as endangered and the northern population as vulnerable. Road-building, feral animals that eat their eggs, and roadkill are the main threats, and Queensland's transport department has trialled an AI system that detects birds near a roadway, coupled with warning signs for drivers.
BirdLife International lists a 2,656 km² Daintree Important Bird Area, overlapping the Daintree, Ngalba Bulal, Kalkajaka, Mount Windsor and Mowbray national parks, chiefly because it supports a cassowary population.
Idiospermum at Noah Creek and Cooper Creek
For botanists the main draw is the flowering plants. The Wet Tropics hold the highest concentration of primitive flowering plant families in the world, and the strangest of them grows in the lowlands about 10 km south of Cape Tribulation, around Noah Creek and Cooper Creek. Idiospermum australiense, known as ribbonwood, dinosaur tree or, wrongly, idiot fruit, is the only species in its genus. It grows to around 25 m, and it has the largest embryo of any flowering plant: what falls from the tree is a naked embryo about 6 cm across, and it is the only flowering plant with more than two cotyledons.
The species survives in just two places covering a total of 22.5 km²: the Daintree population and a second one about 50 km south of Cairns near the Russell River. Both sit on alluvial lowlands at the foot of mountains that receive more than 3,000 mm of rain a year. Its seeds are dispersed only by gravity, so the tree can only creep downhill towards the sea. The German botanist Ludwig Diels first described it in 1912 from material collected in 1902, and its flowers closely match fossils from about 120 million years ago.
Idiospermum shares the forest with other survivors. Austrobaileya scandens, a woody vine that is the only member of its family and one of the oldest lineages of flowering plants, grows in the upland forest and attracts fly pollinators with flowers that smell of rotting fish. The Australian government's World Heritage listing also counts whisk ferns, club mosses, seven ancient fern families, the zamia palm Lepidozamia hopei and conifers such as kauri and Podocarpus, living counterparts of Jurassic fossils.
Bennett's Tree-Kangaroo and the Thornton Peak Possum
Inland the ground rises fast. To the west of Cape Tribulation stands Mount Pieter Botte, and to its south rises Thornton Peak, called Wundu by the Eastern Kuku Yalanji, at 1,374 m the fourth-highest mountain in Queensland. This mountain block is home to two mammals found almost nowhere else.
Bennett's tree-kangaroo (Dendrolagus bennettianus) lives only in the mountain and lowland rainforest between just north of the Daintree River and the area south of Cooktown, a range of roughly 70 by 50 km. Males weigh 11.5 to almost 14 kg. The animal has longer forelimbs than a ground kangaroo, feeds mostly on the leaves of 33 recorded plant species, notably the umbrella tree, and can leap 9 m down to another branch. The IUCN still lists it as Near Threatened, but sightings have become more common since most of its range came under World Heritage protection, and in 2006 a dead specimen turned up on Amos Bay Road, just south of Cooktown.
Higher up, the montane rainforest of Thornton Peak shelters the Daintree River ringtail possum (Pseudochirulus cinereus), a cinnamon-brown possum known from only three mountain-top populations: the Carbine Tableland, the Mount Windsor Tableland and the Thornton Peak massif. Because such species are trapped on cold summits, scientists have suggested Thornton Peak as a possible refuge for moving cold-adapted animals as the climate warms.
Saltwater Crocodiles in the Daintree River Mangroves
The river that gives the forest its name rises at about 1,270 m near Black Mountain and winds for 127 km to the Coral Sea north of Wonga Beach, draining a catchment of 2,107 km². Its lower reaches pass through 33 km² of estuarine wetland, where mangroves line the banks and the water turns saline. It was named in 1873 by the explorer George Elphinstone Dalrymple after the geologist Richard Daintree.
These mangroves are the hunting ground of the saltwater crocodile. Between 2000 and 2012 the Daintree recorded 145 crocodile sightings, ranking second only to the Proserpine River among Queensland rivers for the chance of seeing one. There is still no bridge across the lower river: everyone heading north to Cape Tribulation crosses on the Daintree River cable ferry, which also marks the southern edge of the Cape Tribulation section of the national park. The catchment floods quickly because rain on the surrounding 1,000 m ranges runs straight off; in 2023 the river reached a record 15 m at Daintree after ex-Cyclone Jasper, beating the 12.6 m set only four years earlier.
North of the river, the Cape Tribulation section covers 17,000 ha between the coastal peaks of Thornton Peak, Mount Hemmant and Mount Sorrow and the sea. It holds Australia's last extensive stands of lowland rainforest and strips of littoral, or beachside, rainforest from Thornton Beach to Cape Tribulation beach. Here the rainforest meets fringing reefs just offshore, the coastal scenery that the World Heritage listing singles out. Lieutenant James Cook named Cape Tribulation on 10 June 1770 (log date), the night HMS Endeavour scraped a reef off the cape and then ran aground on what is now Endeavour Reef.
Boyd's Forest Dragon at Mossman Gorge and the Ulysses Butterfly
South of the river, the Mossman Gorge section of the national park covers 56,500 ha of mostly inaccessible rainforest and mountain woodland, where the Great Dividing Range comes close to the coast. Mossman Gorge, 75 km north of Cairns on the Captain Cook Highway, is one of the places where visitors most often meet one of the forest's showiest reptiles.
Boyd's forest dragon (Lophosaurus boydii) is an arboreal lizard found only in rainforest from just north of Townsville to near Cooktown. Males reach about 16 cm in body length with a tail of another 32 cm, and both sexes carry a spiny crest and a yellow dewlap. The Kuku Yalanji call it Jalbil, the name also given to the creature that, in their account, split Snapper Island from the mainland. The Ulysses butterfly (Papilio ulysses), with iridescent electric-blue wings about 10.5 cm across in Queensland, flashes through the clearings and is used as an emblem of Queensland tourism. Its caterpillars feed heavily on Euodia trees, a decline in which could threaten it, and planting pink-flowered doughwood has helped its numbers recover.
The Daintree Important Bird Area also protects a run of birds found only in the Wet Tropics, among them the tooth-billed and golden bowerbirds, Victoria's riflebird, the chowchilla, the fernwren and the Atherton scrubwren.
From the 1983 Blockades to the 2021 Kuku Yalanji Handback
All of this wildlife survives because the forest was fought over. Much of the coastal flatland south of the Alexandra Range and around Cow Bay was cleared for farming in the late 1800s, with a further push in the 1970s. In 1983 and 1984 protesters blockaded the building of a road through the forest north of Cape Tribulation, and the lobbying that followed helped secure protection. Daintree National Park was created in 1981, absorbed Cape Tribulation National Park in 1983 and became part of the World Heritage Site in 1988. The wider Wet Tropics site covers about 8,940 km² and spans 13 major river systems, including the Daintree and Bloomfield.
Private land remained a gap. A $15 million buyback funded equally by the Cairns Regional, Queensland and Australian governments set out to purchase blocks north of the Peninsula Range; by May 2011, 72% of the targeted properties had been secured, including 215 blocks bought by the Queensland Parks and Wildlife Service. On 29 September 2021 the Eastern Kuku Yalanji people won formal ownership of 160,213 ha stretching from Mossman to Cooktown, including Daintree National Park, in a deal with the Queensland government that built on an earlier Native Title agreement. Their people have lived along the Daintree River for an estimated 9,000 years, and the Wet Tropics is the only place in Australia where Aboriginal people have permanently lived in a tropical rainforest. More on that history is in our guide to Daintree Aboriginal heritage.
The Daintree is much smaller than the great equatorial forests, but its lineages are far older and its share of a continent's species is remarkable. To set it beside its giant counterpart, read our Amazon rainforest guide, and for the reefs that lie just off Cape Tribulation's beaches, continue to our Great Barrier Reef geography guide.