Whales are big, but why aren’t they bigger? A new study says the key factor is how many calories they can take in. Researchers came to this conclusion after using small boats to chase down 300 whales ...

Fifty million years ago, whales were four-footed, tailed land mammals about the size of wolves. Over the next 12 million years, these terrestrial whales evolved into fully aquatic animals, complete ...

The shrinking size of whales over the 20th Century could help scientists detect when wildlife populations are in trouble, a study suggests. The analysis shows that the average body size of four whale ...

Being big means they can maximise the opportunities where they exist Blue whales are the biggest animals that have ever existed on Earth but they only recently* got that way. This is the extraordinary ...

Whale sharks are the largest species of shark. Their gentle manner and massive size make them the gentle giants of the ocean. However, one especially large whale shark has been spotted off the Pacific ...