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 ...

Blue Whales are the largest animals even known to have lived on the earth, but scientists have found commercial whaling reduced the size of Blue Whales and several other species. As more whales were ...

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 ...

A colossal 60-foot whale shark, nearly the size of a city bus, has been spotted off the Pacific coast, stunning marine biologists. This gentle giant, a filter feeder vital for ocean health, dwarfs the ...

Where it lives: Tropical and temperate waters around the world. What it eats: Deep-sea squid, octopuses, crustaceans and fish. Dwarf sperm whales have an unusual way to protect themselves if they come ...