Marine Biology

A conservation group says dolphin injuries are on the rise and that human interaction is likely to blame.

New Caledonian authorities ban beach swimming and resume shark culling despite concern from environmental groups, after a wing foiler is killed in an attack.

Fishing licence buybacks and long-term restocking plans are some of the recommendations in the latest report into South Australia's harmful algal bloom, which has been labelled as "vanilla" by one scientist turned political candidate.

A Geraldton fisherman locks himself to the roof of a government building — and says he has swallowed the key — in a protest over Cook government restrictions.

Official advice is unequivocal that salmon farming remains the main threat to the endangered Maugean skate. It remains to be seen if the federal environment minister will ask Tasmanian salmon farms to scale back their operations.

Sightings of Antarctic orcas in Australian waters are very rare. A tour group in WA saw what appeared to be a pod of Antarctic type B killer whales muscle in and steal the meal of a local group of orcas. 

Authorities are looking for a juvenile humpback whale last seen entangled in rope off the coast near Wilsons Promontory.

South Australia's algal bloom could be responsible for pushing a local population of sharks to the brink of collapse, some researchers say.

While parts of South Australia celebrate what could be the end of a devastating algal bloom, nearby communities are seeing the effects for the first time. 

Environment Minister Murray Watt says his decision to keep the status of a rare Tasmanian skate species as endangered rather than change it to critically endangered is based on scientific advice.

A centuries-old nautical technique is being redesigned within a small Sydney cove in a bid to save a tiny remnant population of a dying species.

New research on the birth rates of southern right whales – once touted as a global conservation success story – has revealed an alarming decline.

A slow-moving sleeper shark captured on camera deep below the ocean surface near the South Shetland Islands is the first shark species to ever be found in Antarctic waters.

For the first time a group of international scientists have measured the impact of what happens to marine life when the lights go out underwater.

On Kangaroo Island – where the bloom has washed death ashore for almost a year – a group of citizen scientists are focusing their efforts on "what’s still out there". 

While Adelaide is largely having a reprieve from the algal bloom, it is a different story on the south-west tip of the Yorke Peninsula with locals reporting fish kills and discoloured water.

The sighting comes amid a spate of white shark reports in SA's south east, and after a tragic month of incidents in NSW. 

Visitors to Melbourne's south-eastern beaches over the weekend were surprised to see an influx of crimson jellyfish bobbing in the water. One expert says a "perfect storm" of factors has brought them to the coastline.

Several shark species are on the move as waters warm along Australia’s east coast. Here's how climate change is affecting the range of three major species.

Research from James Cook University shows some sharks are breaking the rules of biology, by not using any extra energy in reproduction.