Marine heatwaves can kill off species and alter ecosystems.
Marine heatwaves have had little attention until recently, but they're already having large effects.
A pelagic snail ensnares food with with a mucous web.
Linda Ianniello https://lindaiphotography.com
Biologists are finding new evidence that these ocean invertebrate grazers don't just ingest whatever they catch. They can actually be picky eaters – and their choices might influence ocean food webs.
Juvenile blue tang sheltering in restored staghorn coral.
With coral reefs in crisis around the world, many organizations are working to restore them by growing and transplanting healthy corals. A new study spotlights techniques that help restored reefs thrive.
The CSIRO has provided new estimates of population sizes for White Sharks in Australian waters.
How many shark encounters have there been at your local beach? Explore our interactive map to see 20 years of incidents between humans and sharks in coastal waters around Australia.
Oysters can do a lot more than they’re given credit for.
Oysters aren't just good for a feed. They also give a vital boost to coastal ecosystems, which is why efforts are underway to restore Australia's once-abundant oyster reefs to their former glory.
Giant triton molluscs are a useful ally in battling the coral-grazing crown-of-thorns starfish.
AAP Image/AIMS, K Goodbun
The federal government's new funding aims to spread the net wide in investigating possible ways to protect the Great Barrier Reef's corals. Winning this battle will require a wide range of weapons.
The mouth of the Murray River delivers vital nutrients to marine life in the ocean beyond.
Low flows in the Murray River in recent years have harmed tiny marine plants called phytoplankton, with consequences for local marine species and management.
When the usual way of doing things is flipped around, students can benefit.
"Flipped classrooms" aren't yet common around Africa, but a partial flip that marries technology and collaboration has real potential.
Parts of the Great Barrier Reef’s outer reefs can form a natural barrier to coastal recession, thus protecting urban centres.
Coral bleaching on the Great Barrier Reef could lead to increased vulnerability of Queensland coastal cities and towns, and not only through its impacts on the tourism industry.
Mangroves are superheroes on both land and sea, storing carbon and providing protection for coasts.
Monstrous, or just misunderstood?
National Oceanic and Atmospheric Administration
People are more likely to support conservation for cute rather than creepy-looking animals.
A blue whale surfaces.
Songs of marine animals can help us discover new populations.
Microplastics can carry other pollutants.
Oregon State University/Flickr
Up to 236,000 tonnes of microplastic enter our oceans each year.
Cities are bright underwater too.
Sydney image from www.shutterstock.com
Light pollution is changing the day-night cycle of some fish, dramatically affecting their feeding behaviour.
The idea is to come up with better alternatives to this.
Australian Customs and Border Protection Service
Japan's fleet is on its way to the Southern Ocean for more "scientific" whaling. But a new resolution pointing out the importance of whale poo could help remove Japan's rationale for lethal research.
A researcher taking a photo-identification shot of a whale shark.
(C) Peter Verhoog, Dutch Shark Society
How you tell one whale shark from another? Spots and stripes.
Kelps form Australia’s neglected Great Southern Reef.
Cool-water kelp forests are being eaten by tropical species moving south on warming waters.
Right whales have been shown to be affected by noise pollution.
FWC Fish and Wildlife Research Institute/Flickr
The increasing use of the sea for human activities has resulted in a dramatic rise in noise levels.
Hammerheads are the species most caught in NSW’s shark nets.
Shark image from www.shutterstock.com
New South Wales wants to extend its shark net program after a spate of attacks in the north of state.
Seagrass meadows are often overlooked by the public but vital to the ocean ecosystem.
Seagrass is more than just a bit of sea greenery.