Among the marine mammals swimming through our planet’s seas, whales ... of seals and sea lions, called pinnipeds, also took the plunge in the deep past. Paleontologists are still piecing ...

The largest toothed whale in the world, sperm whales are deep sea feeders and rarely spotted near shore. Authorities were alarmed to find the whale swimming ... animal with water to minimise ...

These ranged from poisoning, to climatic changes driving prey into the North Sea which the large cetaceans followed to their doom. Sperm whales live in deep ... whales to swim through into ...