People age 65 and older who eat fish may live an average of two years longer than people who do not consume the omega-3 fatty acids found mainly in seafood.
French and South African biologists will dive to deep-sea caves in the Indian Ocean next month in a bid to locate the coelacanth, the "living fossil" fish whose history predates the dinosaurs.
As fish get smaller under Man's environmental impact, they become more exposed to predators, which means a crucial food source will become more endangered than thought.
A monster bluefin tuna sold for a record-breaking $1.8 million in the year's first auction at Japan's Tsukiji fish market on Saturday, nearly three times the previous high set last year.
Palaeontologists in China said Wednesday they had found the world's oldest flying fish, a strange, snub-nosed creature that glided over water in a bid to evade predators some 240 million years ago.
Long spared because of their remoteness, the high seas have become an important hunting ground for fish trawlers and oil prospectors, putting at risk many marine species that call these waters home.
An Australian research team said Monday they have found an effective way to kill the destructive crown-of-thorns starfish, which is devastating coral reefs across the Pacific and Indian oceans.
Australian scientists said Friday there was now "striking evidence" of extensive southward migration of tropical fish and declines in other species due to climate change, in a major ocean report card.
Sri Lankan scientists have identified a new genus of fresh water fish and named it after the evolutionary biologist and renowned atheist Richard Dawkins.