Jellyfish predate dinosaurs and even trees. But now they're booming in numbers, disrupting ocean ecosystems and shutting down power plants.
A Norwegian company that plans to drill for oil in the Great Australian Bight has prompted fisheries to renew calls for a probe into a practice they say could damage their businesses.
Rock lobster often turns into shock lobster for diners with prices of the prized crustacean getting up to $100 a kilogram, but this Christmas there will be far more lobster available and prices are set to fall.
The Northern Territory's Department of Environment seeks "approval" from gas giant Inpex before it publicly releases any of its independent reports, documents, or allows their scientists to be interviewed by the media, the ABC has learned.
Today the vulnerable and endangered dugong is a protected species, but once upon a time hunters slaughtered the marine animal for its meat and oil in a thriving commercial industry based in Queensland.
The small coastal community of Tin Can Bay, just two hours north of Brisbane, has a unique bond with a pod of wild dolphins unlike anywhere else in Australia.
The South Australian city of Whyalla is set to welcome more tourists due to the popular annual display of giant cuttlefish spawning.
The great northern whale migration resulted in some spectacular viewing for whale watchers off the West Australian coastline.
Offshore oil and gas rigs have a reputation as ugly and environmentally destructive. So when it comes time to shut up shop, should we remove them completely? Maybe not, some experts say.
Australia's commitment to the Great Barrier reef is well known, but ocean health goes beyond the preservation of this famous marine ecosystem. As a wealthy island nation, with the third largest marine jurisdiction on earth, we are in a unique position to help, write Mellissa Wood and Elwyn Grainger-Jones.