Some animals, such as California sea lions, have small brains relative to their body size, but are still impressively intelligent, showing brain evolution is even more complex than it appears.
The cetacean brain has a specialised thermogenic system that helps the animal’s brain to produce enough heat to maintain a functional brain temperature.
It's time to listen to warnings from the people of the Pacific.
More than 450 long-finned pilot whales are stranded in Tasmania. Saving them is a race against time.
Wild dolphins are fast, smart and hard to study, but it is important to understand how human actions affect their health. So we are building a drone to sample hormones from the blowholes of dolphins.
This study provides the first evidence that penguins emit sounds underwater when they hunt.
The Great Pacific Garbage Patch, a floating accumulation of rubbish the size of a continent, has whales and dolphins in its heart.
As the field of animal law continues growing, so does public awareness of the problems with inconsistent ways that Canadian law protects some animals, while leaving others behind.
New research shows how marine mammals ignore the rules of biology to thrive in the world’s coldest waters
Dolphin pairs had to learn to push buttons at the same time to get a reward. So what happened when one dolphin figured that out, while the other still had to learn?
Researchers have discovered male bottlenose dolphins can retain individual vocal labels – or “names” – to help them recognise each other in their social network, much like humans.
A new report will supply some information needed for science based conservation measures in the Red Sea.
Researchers have found evidence of the same brain pathologies in dolphins that are present in the brains of humans who died with Alzheimer’s. What might this suggest about Alzheimer’s in humans?
The dolphin population in parts of Western Australia more than halved one year, just as an El Niño event hit over in the Pacific. So what’s the connection?
Marine mammals are often referred to as sentinels of the ocean and research on whales and dolphins in particular contributes important knowledge about the health of our seas.
It’s not easy to tackle a live octopus - so many arms, all those suckers! But some bottlenose dolphins have found a way to defuse and eat these eight-armed sea creatures.
A new study of captive dolphins has found that those engaging in synchronised swimming make more optimistic judgements about an unknown event.
Size doesn’t always matter when it comes to the pitch of your voice, especially if you’re an aquatic mammal.
Dolphin-watching tourism has pros and cons — so what should you think about next time you head out?
The most recent episode of the BBC’s Planet Earth II has got people asking some hard questions about the world’s most mysterious big cats.