Giant kelp (
Macrocystis pyrifera) is a potential energy crop.
Linking Tourism & Conservation/Flickr
Making biofuels from crops grown on land poses trade-offs between food and fuel. A new study looks offshore.
Female elephant seals take seven-month feeding trips during which they balance danger, starvation and exhaustion.
By measuring how and when elephant seals sleep, researchers were able to figure out how elephant seals change their risk-taking behavior as they gain weight.
The possibility of accurate predictions will aid planning adaptation for severe weather conditions
Tim Graham/Getty Images
With research that offers new insights, there is increased hope for improved climate predictions and better preparation for severe weather conditions.
Te Pokohiwi, or the Wairau Bar, at the top of the South Island: arrival point for some of the first explorers from East Polynesia.
Aotearoa New Zealand is falling behind in world heritage sites. Is it time we lobbied for recognition of our unique cultural history?
The Marshall Islands and other small island nations are urgently threatened by rising seas.
Climate change is a true existential threat for small island nations, but the US has done little to help the Marshall Islands, which it administered for decades.
Oceans 21 is a Conversation international series examining the history and future of the world's ocean.
The Pacific Ocean produces oxygen, helps regulates the weather, provides food and livelihoods. It's a place of fun, solace and spiritual connection. But its delicate ecology is under threat.
A female killer whale leaps from the water in Puget Sound near Seattle.
(AP Photo/Elaine Thompson)
Scientists had been uncertain about why killer whales are dying in the northeastern Pacific Ocean. A new study takes an in-depth look and provides the tools to help prevent additional deaths in the future.
New research confirms that massive plumes of buoyant hot rock once rose from near the Earth's core to the surface and triggered vast volcanic eruptions - and that New Zealand sits on top of one.
Dan Peled/AAP Image
The absence of climate drivers – specifically, the Indian Ocean Dipole and La Niña – explains why Australia has gone so long without heavy rains.
The interior of a replica 1930 Bathysphere, as used by scientist William Beebe and engineer Otis Barton to explore the oceans depths.
Dominic Lipinski/PA Images
Almost a decade before the moon landings, humans reached the lowest point on Earth's surface.
A common guillemot colony on the Farallon Islands, California.
As well as a stark warning about climate change, the disaster underlines the importance of wildlife monitoring.
The ocean pool is a familiar sight in New South Wales but isn’t nearly as common elsewhere.
New South Wales boasts many wonderful ocean pools, thanks to a combination of climate, geology, culture and prosperity. Despite concerns about costs, economic and health benefits far outweigh these.
Fish are attracted to floating objects, especially with dangling ropes or nets.
Fishers who hunt wild tuna use fish's natural attraction to floating objects to lure them to known positions near GPS-equipped rafts. However, these rafts are attracting increasing concern.
A customer waits for the world’s longest flight from Singapore to Newark.
AP Photo/Wong Maye-E
The day and a half it takes to get from New York to Singapore and back offers plenty of time to ponder the economics of ultra-long-haul flights – and wonder why we'd want to make it any longer.
Where do the ocean waters that wash the Gold Coast come from?
If you've ever wondered where the ocean currents flow around Australia's coastline then we have a great map for you.
A female resident orca whale breaches while swimming in Puget Sound in January 2014.
THE CANADIAN PRESS/AP, Elaine Thompson
Noisy waters may be making it harder for southern resident killer whales to communicate with each other and find their food.
Yellow-bellied sea snake (
Coleman M. Sheehy III, Florida Museum of Natural History
Sea snakes spend their lives in the water, giving birth to live young at sea, so why are they only found in some of the world's oceans? The answer lies in a combination of climate and geography.
Sockeye salmon need strong hearts to migrate long distances. An oil spill could hurt their survival.
(AP Photo/Gary Stewart, File)
Pacific salmon are ingrained in the culture and economy of Canada. They are also a key link between ocean and land. But what happens if a pipeline failure contaminates their habitat?
The graceful Dugong.
It can fill in the scientific gaps.