Photographers capture mutant crayfish, cleaning fish, and synchronized whales in this year's top underwater contests.

Baleen whales don’t have teeth. Instead, they use baleen, a filtering system that lets the largest animals on Earth feed on ...

In a state better known for its delicious seafood and as the home of the United States Navy, there’s a new effort to create ...

Sharktober is real in Hawaii — and it's down to the reproductive pattern of predatory tiger sharks, an analysis of 30 years ...

For eight hours, all they saw were dolphins and the spouts of humpback and gray whales. Then, the call went out.

The worms have been named after Jeff Daniels, star of the seminal 1990 comedy-horror film “Arachnophobia.” The extinction of ...

Among marine mammals, beluga whales ( Delphinapterus leucas) are particularly difficult to study in their icy habitat. To better understand and protect this endangered species, scientists must piece ...

SEATTLE — With breaches and tail slapping, a pod of orca whales put on a show near Seattle on Friday. The close encounter attracted dozens of people to the shore of the West Seattle neighborhood.

With breaches and tail slapping, a pod of orcas put on a show near Seattle on Friday. The close encounter attracted dozens of people to the shore of the West Seattle neighborhood. Whale watchers ...

Humpback whales seem to be lingering longer than before off Ventura. December also typically marks the start of gray whale sightings locally. Whale watching boats report humpback whales have started ...

While transient ecotype killer whales are mammal-eating, the resident and offshore orcas are fish-eating. Though killer whale populations in the eastern North Pacific near Vancouver Island and Alaska ...

Megalodon tends to dominate conversations about prehistoric ocean predators. Its massive jaws and oversized teeth have turned it into a pop-culture icon that feels almost mythical. Yet during the ...