In many ways, the deep ocean feels like an entirely different planet from the one we live on—home to some of Earth’s most extraordinary creatures, two of the most evocative being the largest toothed ...

Credit: Wikimedia Commons Living in the icy waters of Antarctica, the colossal squid reaches a bulkier size than its giant relative, weighing over 1,500 pounds. Its massive eyes, the largest of any ...

Whalers pursued sperm whales for the rich oil in their oversized heads. Now biologists are on the tail of these deep-diving, long-lived, sociable and mysterious sea creatures. Gerard Soury / Oxford ...