Bottlenose dolphins can reach speeds of over 18 miles an hour. They surface often to breathe (two or three times a minute).
Bottlenose dolphins travel in groups and communicate with each other by a complex system of squeaks and whistles, and track their prey through the expert use of echolocation. They can make up to 1,000 clicking noises per second. These sounds travel underwater until they encounter objects, then bounce back to their dolphin senders, revealing the location, size, and shape of their target.
The bottlenose dolphin often feeds on bottom-dwelling fish, and sometimes eat shrimp and squid.
Dolphins are threatened by commercial fishing for other species, like tuna, and can become mortally entangled in nets and other fishing equipment.