How deep can Dolphins dive?

The deepest dive ever recorded for a bottlenose Dolphin was 300 meters (990 feet). This was accomplished by Tuffy, a Dolphin trained by the US Navy. Most likely Dolphins do not dive very deep, though. Many bottlenose Dolphins live in fairly shallow water. In the Sarasota Bay area, the Dolphins spend a considerable time in waters that are less than 2 meters (7 feet) deep. Other whale and Dolphin species are able to dive to much greater depths.