Beaked whales, also known as Ziphiidae, are a group of marine mammals characterized by their long beak-like snouts. They belong to the family of toothed whales and are found in all the oceans of the world. There are over 20 species of beaked whales, each with a unique set of physical and behavioral characteristics. Some common synonyms used for beaked whales include bottlenose whales, goose-beaked whale, and spade-toothed whale. These synonyms reflect the different shapes and sizes of the whales' beaks and teeth. Despite being one of the least studied groups of marine mammals, beaked whales are known for their deep diving abilities and elusive nature.