Ecology

Sharks were thought to be silent, but scientists have recorded a New Zealand species making a clicking noise.

Thousands of fish and other marine life have washed ashore across the NSW Northern Rivers as floodwaters surge towards the coast.

Ecologists say the rare and cryptic smoky mouse is proving it can survive on its own in the state's south, where a repopulation effort for the critically endangered rodent is currently underway. 

A new study suggests nutrient-rich crocodile poop could be benefiting wetland vegetation in the Top End while predation pressure limits feral pig damage.

A researcher in the Daintree has found thermal drones to be a new and effective way to find one of Australia's most hard-to-find marsupials.

Scientists have discovered that human language and whale songs have remarkable similarities in the way they are segmented and structured. 

A 1.8-metre-long lace monitor that walks around Robert Miller's dairy farm "like it owns the place" is the sign of rejuvenation he needed to see after years of healing from the Black Summer bushfires.

A dozen endangered brush-tailed rock wallabies find a safe new home after an aerial rescue operation in the Warrumbungle National Park.  

The deadly Wangary bushfire 20 years ago appears to have been the final nail in the coffin for yellow-tailed black cockatoos in South Australia's Eyre Peninsula. Ecologists are calling for urgent action before it's too late.

In the middle of Tasmania sits a 5,000-hectare property once used for sheep grazing. But when the sheep farmers left, an unlikely buyer moved in.

Citizen slug sleuths are helping scientists keep track of unique creatures that have made a remarkable comeback at Mount Kaputar in New South Wales. 

The flammable Tasmanian blue gum has caused friction among Californians in the past for its role in wildfires. Scientists say the fire-loving tree is one factor in a complex story of climate change.

The world's growing population is putting pressure on its arable land, and scientists warn 90 per cent of all soil could be degraded by 2050 unless urgent action is taken.

A wildlife ecologist says it may take 20 years to recover what has been lost to an ongoing bushfire in one of the "most biologically important landscapes in Victoria".

If Australia doesn't have a population plan, how will it meet the challenges of coming decades?

An ABC investigation has found the 180-hectare property on the Fraser Coast, marketed as part of an "eco-development", has become an alleged pollution time bomb, after being used to illegally dump more than 35,000 tonnes of waste.

Researchers and local Indigenous people say a beautifully preserved metre-wide and 40-centimetres-high tree stump may be a thousand-year-old messenger with a story to share about climate change.

As few as 120 Gilbert's potoroos remain in the wild, so when two new animals were found on Middle Island off the WA coast, it was a cause for celebration. 

Emi Arnold and Pat Monarca were about to finish work when they spotted a long-lost tiny dragon. Now Zoos Victoria is leading the charge to bring the reptiles back from the brink.

Craig Eddie's love affair with snails started on a Queensland beach when he was five years old. Since then he's turned his passion for the molluscs into a career in ecology.