Dolphins

As many as 70 orcas cooperatively hunted, killed and ate a roughly 50-foot long blue whale last month off the coast of Australia.

More Than 50 Orcas Hunt and Kill Blue Whale Off Australian Coast

This is one of just a handful of times that orcas have ever been recorded killing a blue whale

The dolphins swam in the Grand Canal near St. Mark's Square, Venice's main public square

Dolphins Spotted in Venice's Grand Canal—for Real This Time

The coast guard and a rescue organization took about two hours to guide the cetaceans out of the canal

Ocean creatures are noisier than scientists first thought.

Women Who Shaped History

Biologist Marie Fish Catalogued the Sounds of the Ocean for the World to Hear

Scientists once thought marine life kept quiet. Then the Navy tapped an aptly named researcher with an open mind

Dolphins can tolerate freshwater for short periods of time, but they developed painful lesions after the storms as a result of prolonged exposure.

Fatal Skin Disease Outbreak in Dolphins Linked to Climate Change–Fueled Storm Surges

When the porpoises are exposed to freshwater after extreme weather, they develop grisly lesions that can lead to their deaths

Marine mammals could contract the virus through their mucus membranes, like their blowholes, eyes and mouths.

Can Marine Mammals Catch Covid-19 via Wastewater? The Evidence Is Murky

Whales, and other species, may have the same cellular vulnerability to Covid-19 as humans, but experts say the risk of infection is incredibly low

A male bottlenose dolphin used in the study, seen here with electrocardiogram suction cups attached to monitor its heart rate.

New Research

Dolphins May Be Able to Control Their Heart Rates

New study finds trained dolphins slow their hearts faster and more dramatically when instructed to perform long dives than short ones

A remarkable abundance of wildlife reside on or around the territory's four islands, including endangered yellow-nosed albatross, sevengill sharks, rockhopper penguins and 11 species of whales and dolphins.

A Tiny Atlantic Island Just Protected a Giant, Pristine Stretch of the Ocean

Tristan da Cunha fully protected 90 percent of its waters, safeguarding its vibrant biodiversity

Viruses, notably influenza A and Morbillivirus, cause mass die-offs with striking head counts.

Mass Die-Offs of Marine Mammals Are on the Rise

Viral and bacteria outbreaks are increasingly causing fatalities in a variety of species, including seals and dolphins

Nobody knows when Fungie, a solitary cetacean, arrived in the waters off Dingle, a town on the southwest coast of Ireland.

A Dolphin Has Been Living Solo in This Irish Harbor for Decades

Named Fungie, the cetacean draws thousands of tourists to Dingle—and may teach us how to protect other solitary-sociable animals in the wild

An illustration approximates a pod of Ankylorhiza tiedemani hunting diving birds.

Giant Extinct Dolphin May Have Hunted Other Whales

The nearly 16-foot species may have been an apex predator like modern killer whales, researchers say

An example of the blue bioluminescence produced by microscopic organisms called dinoflagellates, which can chemically synthesize their own light

Dolphins, Surfers and Waves Sparkle in Bright Blue Bioluminescent Glow Off California Coast

A rare bloom of microscopic organisms capable of making their own blue light has transformed several of the state’s beaches

Some dolphins are shy, too.

Wild Dolphins Seem to Have a Range of Personalities

From shy to bold with shades in between, dolphin personalities are surprisingly similar to ours

Dolphin Boy Bands Sing 'Pop' Songs in Sync—and the Ladies Want It That Way

Female dolphins, it seems, aren’t immune to the allure of a harmonizing boy band

Dolphins and their calves enjoying a summer day in the lower Potomac River.

Cool Finds

Dolphins Are Finally Living and Breeding in the Potomac River Again

About 1,000 bottlenose dolphins have been recorded in the lower reaches of the recovering river, including one that gave birth in August

An Atlantic spotted dolphin swims behind a Pilot whale.

Shedding Genes Helped Whales and Dolphins Evolve for Life at Sea

When adopting an aquatic lifestyle, cetaceans ditched genetic code related to sleep, DNA restoration and more

Dead vaquita entangled in a gillnet set for Totoaba

There Are ‘At Most’ 19 Vaquitas Left in the Wild

An alarming new study documents the continued decline of the critically endangered porpoise—but it may still be possible to save the species

The bottlenose mother, pictured here with her adoptive whale calf and biological daughter, exhibited unusually tolerant behavior

Researchers Document First Known Case of Dolphin Mom Adopting Whale Calf

The melon-headed male whale actively competed for his adoptive mother's attention, repeatedly shoving his bottlenose dolphin sister out of the way

Elusive River Dolphins Caught Chatting Up a Storm

Researchers previously thought the acoustic repertoire of Araguaian river dolphins was relatively limited

Morigenos dolphins.

Cliquey Adriatic Dolphins May Have Strategies for Avoiding Each Other

You can’t swim with us

The fossilized crania of three long-snouted cetaceans.

The Mystery of Ancient Dolphins’ Super-Long Snouts

A new study suggests the extinct cetaceans used their snouts to hit and stun prey, much as swordfish do

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