Here's what we know:
* Most dolphins stay in shallower waters: They typically prefer waters less than 300 meters (about 984 feet) deep.
* Some species can dive deeper: Bottlenose dolphins have been recorded diving up to 500 meters (1,640 feet) in search of food.
* Deeper dives are rare: These deeper dives are less common and are usually short-lived.
Important to note: Dolphins are mammals and need to breathe air. They can hold their breath for a significant amount of time, but they eventually need to surface to breathe.