Corals north of Cairns have been hit hardest by the recent bleaching.
AAP Image/ARC Centre of Excellence for Coral Reef Studies, James Kerry
An estimated one-third of corals have now died in the parts of the Great Barrier Reef hit hardest by bleaching, meaning recovery could take years or even decades.
A study has shown that turtle hatchlings lend each other a flipper digging out of the sand to save energy.
Banco de Imagem Projeto Tamar/Flickr
New research suggests turtle hatchlings work together with clutch mates to escape their underground nests.
The next cancer breakthrough could be found in international waters – but who's in charge of the high seas?
The land may be dry, but Western Australia’s waters are full of life.
The Great Barrier Reef might get all the attention, but what about our western coral reefs? Warmer waters and human impacts mean these reefs are in trouble.
A Japanese fish found in Washington after hitching a ride in a boat sent across the Pacific Ocean by the 2011 tsunami.
The 2011 Japan tsunami illustrates how more marine creatures are crossing the oceans than ever before - and not all of them are friendly travellers.
Early signs of bleaching coral in Kaheohe Bay Hawaii, August 2015.
XL Catlin Seaview Survey / Underwater Earth
Many corals can't make it through the bleaching events caused by warming ocean waters. But some can – and scientists are trying to learn more about the sources of their resilience.
Satellite-tagged eels, ready for release.
Martin Castonguay, DFO
Much of what we know about these elusive eels' life cycle has been based on circumstantial evidence. Now for the first time, scientists tracked an adult eel to its distant spawning ground.
While not all subsidies are bad, some are drive a ‘race to fish’.
Fish numbers are rapidly dwindling globally, and fishery subsidies are one of the key drivers behind this decline.
An Indo-Pacific Man-o-war, AKA bluebottle, washed up on a beach.
Copyright L Gershwin
Blue bottles have been washing up on beaches lately, but what exactly are they? And are you really supposed to pee on their stings?
Tuna and other top predators could run out of food in warming seas.
Tuna image from www.shutterstock.com
Over the past five years we've seen a significant increase in research on ocean acidification and warming seas, and their effect on marine life. Overall, unfortunately, the news is not good.
Sea turtles eating more seagrass could threaten the ocean’s ability to store carbon.
Sharks and other ocean predators help protect the ocean's carbon stores by keeping other wildlife in check.
A green turtle hatches in the lab.
Immersion in seawater kills sea turtle eggs, suggesting that sea turtles are increasingly at risk from rising seas, according to research published today in Royal Society Open Science.
Catching a chill.
The opah fish circulates heated blood through its body like a bird or mammal, meaning it can outcompete its deep sea rivals.
Give up, brain coral, we have you surrounded.
Joseph Pawlik, UNCW
With their natural predators removed, sponges are free to take over coral reefs.
Mass extinction, good news for this guy.
The end-Triassic mass extinction may be better known for preceding the rise of the dinosaurs, but it had a profound effect on oceans too.
The living fossil Coelacanth, first sighted in South African waters, also lives across the Indian ocean in Indonesia.
A new centre in Indonesia is dedicated to studying the curious and ancient Coelacanth.
A leatherback sea turtle pauses for air on its long migration.
Connie Merigo (NMFS Permit #1557-03)
How do these massive sea turtles stay on target as they migrate hundreds of miles through featureless open ocean?
One day something will outgrow the blue whale – but it won’t be another whale.
But the giants of the future won't be the same fish, whales and sharks we know today.
The Hawaiian monk seal is critically endangered.
Gaze out from the deck of a boat and you will see an ocean that was, in Henry David Thoreau’s phrase, “equally wild and unfathomable always”. There’s a stark contrast in appearance here between the apparently…
Catch my disease.
It has long been news that overfishing persists in many of the world’s oceans. Fish and invertebrate stocks have been over-exploited for our ever-hungry, growing human population, leaving some species…