Do dolphins move from place to place?

The bottle-nosed dolphin normally dives to depths of 150 feet [45 m], but the deepest recorded dive for a dolphin is 1,795 feet [547 m]! How does this mammal survive such a dive? Its heartbeat slows down during the dive, and blood is diverted to the heart, lungs, and brain. Also, its muscles contain a chemical that stores oxygen.