The subtropical waters of New Zealand’s Northland region may have had a rare treat recently, after reported sightings of what ...

How big they are: From 5 to 32 feet (1.5 to 10 meters) long, depending on the species Dolphins live in almost every ocean, except most tend to avoid the cold waters in the Arctic and around Antarctica ...

There’s been a 140-year debate about whether two dolphin types most commonly seen in the waters off Southern California are related. Now, researchers affiliated with the National Oceanic and ...

Pink dolphins are an indicator species of the Amazon river, scientists say. Swimming with the piranhas and anacondas below the surface of the Amazon River in Bolivia is a rare species: pink, ...

Biologists discovered killer whales and dolphins working together to hunt salmon, a behavior never before documented in this ...

Irrawaddy dolphins are rapidly disappearing across Asia. Scientists warn that fishing nets, pollution and habitat loss are ...

Off the coast of British Columbia, killer whales are tailing dolphins, and both seem to be rewarded with fishy meals. But not everyone is convinced it's teamwork—and the behavior may hint at other oce ...

Strange discoveries are normal in the largest rainforest on Earth, from the thousands of Amazonian "Stonehenges" to the world's largest snake ever found on record that was recently discovered in the ...