Dolphins

Northern gannets plunge into the water to hunt in Shetland. This image won the British Waters Wide Angle category.

See 15 Otherworldly Images From the Underwater Photographer of the Year Awards

A hunting monkey, 'kissing' scorpionfish and playful dolphins feature in just a few of the 130 striking photographs distinguished with honors in the competition

German researchers tested dolphins' ability to detect electric fields.

Bottlenose Dolphins May Have an Electric Sense, Study Finds

Dimples called vibrissal pits on the beaks of the mammals can perceive electricity and might help with hunting and navigation

After several attempts to dolphin-proof the bait, the team finally figured out a solution: a mesh bait pouch.

Watch Dolphins Outsmart Crab Traps in First-Ever Footage

Bottlenose dolphins in Australia have been snatching fish used to bait crabs—and adapting to fishers' attempts to thwart them

Orcas are highly social and are likely learning the boat-ramming behavior from one another.

Orcas Sink Another Boat in the Strait of Gibraltar

The crew is safe, but the marine mammals did so much damage to the Polish sailing yacht that it couldn't make it back to port

Researchers are still trying to confirm the cause of death, but they suspect the high water temperatures are to blame.

At Least 125 River Dolphins Have Died Amid Drought and Heat in Brazilian Amazon

Though the pink animals' cause of death is not confirmed, temperatures in the remote Lake Tefé reached 102 degrees Fahrenheit in late September

A killer whale in the Salish Sea is observed harassing a porpoise.

Why Do Orcas Keep Harassing Porpoises?

An endangered group of killer whales in the Pacific Northwest has been toying with porpoises for decades—and new research offers some possible explanations

Orcas are opportunistic feeders that will take advantage of human fishing activities to get an easy meal.

Nine Orcas Have Died in Fishing Gear Near Alaska This Year

A "new behavior" from the animals might be linked to this sudden uptick in deaths, as they have been feeding in front of fishing nets, a trade group says

Great white sharks were once abundant in South Africa’s False Bay and Gansbaai regions. But now, they appear to have ventured to safer waters elsewhere.

Where Did South Africa's Missing Sharks Go?

After a spate of orca attacks spooked the fish, they have now been found

Though she appeared to be in good health just days earlier, Lolita died of a suspected renal condition.

Lolita the Orca Dies After More Than 50 Years in Captivity

Several groups were working to remove the 7,000-pound creature from the Miami Seaquarium and return her to the ocean at the time of her death

An orca mother travels alongside her son. Older orca females past their reproductive years often lead their pods on hunts.

Aging Mother Orcas Keep Their Sons Out of Fights

In a new study, male orcas with mothers that had gone through menopause showed less tooth scarring on their fins compared to other males

A pink dolphin spotted in Louisiana.

Rare Pink Dolphins Spotted Swimming in Louisiana River

The cetaceans are likely bottlenose dolphins with albinism, and one could be "Pinky," an animal first seen in the area in 2007

An orca hunts sea lion pups on a beach in Argentina.

Five Astounding Orca Behaviors Explained, From Ramming Boats to Hunting Great White Sharks

The apex predators also surge onto shorelines to capture seals and engage in mysterious greeting ceremonies

Dolphins and humans both change how they communicate when they're around babies.

Dolphins Use Baby Talk When Their Calves Are Around

Like humans, female dolphins make higher-pitched vocalizations when communicating with their young

A recent incident suggests the boat-bashing behavior of orcas in the Strait of Gibraltar might be spreading to other groups.

Orca Rams Into Yacht Near Scotland, Suggesting the Behavior May Be Spreading

The incident occurred roughly 2,000 miles away from the recent encounters near Spain and Portugal

Nihohae matakoi swam in waters off the coast of New Zealand around 25 million years ago.

These Prehistoric Dolphins Had Tusk-Like Teeth

The animals likely thrashed their heads back and forth to injure or stun prey with their unusual, horizontal teeth

A distinct subpopulation of orcas lives in the Strait of Gibraltar off the coast of Spain, where they like to hunt and eat Atlantic bluefin tuna.

Orcas Are Ramming Into Ships Off Europe's Coast

One researcher says this may be a response to a "critical moment of agony" a female orca experienced with a boat

Scan of a porpoise head showing the phonic lips, which help produce echolocation clicks, and the round, fatty melon that conducts sound into the water

Some Whales Use a Creaky 'Vocal Fry' Voice to Find Food

Like humans, toothed whales have three vocal registers: chest, falsetto and vocal fry

A dolphin giving a cue to a fisher in Laguna, Brazil.

Dolphins and Humans Work Together to Catch Fish in Brazil

The partnership has endured for some 150 years, and it benefits both species, a new study finds

Fishers have employed all manner of strategies to prevent dolphins and other marine mammals from raiding their nets. “Hot sauce” is the latest in the arsenal.

Dolphins Shrug Off Hot Sauce-Spiked Nets

Fishing nets laced with spice did nothing to deter the hungry marine mammals

A pod of killer whales swims together in Chatham Strait, Alaska. 

Video Footage Captures Orcas Killing Great White Sharks

The predation could explain why the sharks have been locally declining in recent years

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