Whales are a group of mammals that live in oceans. They include some of the largest animals on Earth. The blue whale is the ...

The blue-lined octopus (Hapalochlaena fasciata) is only a few centimeters long, yet it may be one of the most dangerous ...

Show more The big blue is the world's greatest wilderness ... relative safety away from coastal predators. Over half of all animals in the open ocean drift in currents. Jellyfish cross entire ...