The man was amazed by the discovery which could be more than 300 million years old. Find out what it is.
Find out why a WA offshore gas project will be challenged in the Federal Court over concerns it could harm the Great Barrier Reef.
Known to have existed until about 2000, two factors are believed to have killed off this genetically distinct population.
Conservationists are urging the Queensland government to drop the controversial shark net program after another whale became tangled.
One local on North Stradbroke Island has a message for tourists after he shared a spectacular photo of a huge shark stalking the ocean. Find out more.
A daily dog walk has ended in tragedy for an Adelaide man after his border collie ate one of the world's deadliest fish. Find out what you need to know to help protect your pet.
Urbanisation and climate change are contributing to the decline of bull shark habitat, but scientists say there is some good news.
These fisherman are now paid to collect rubbish after their regular catch disappeared. Find out more as we exam the global initiatives for World Oceans Day.
Yahoo News asked each of the supermarket chains seven questions about their plastic use. Their responses were disappointing. Find out why.
While plastic regularly kills whales in the Phillipines, this 70-year-old male died of something less common. See out what investigators found.
For the first time, scientists have mapped the underwater volcano following the disastrous eruption and tsunami in Tonga. What they found blew them away.
Ocean swimmers at Bondi had a Monday morning they will never forget when they swam eye to eye with a pair of humpback whales. See the incredible pictures.
A South Australian man took to the internet to wonder what was behind the curious detail. Do you know?
The three-metre shark latched onto the boat and wouldn't let go as the fishing group became increasingly 'worried'. Watch the drama unfold.
One of the ocean's most elusive creatures from the deep has washed up on a beach in Cape Town – a week after another giant from the sea was found in Japan.
Grey nurse sharks have disappeared from a popular diving spot in NSW. Researchers are desperately trying to work out why.