All dolphins have conical teeth that are used for biting and trapping prey, such as crustaceans and fish, but are not used for chewing. Dolphins swallow their prey whole. Dolphins fall into the odontoceti, or "toothed whale," suborder of cetaceans, the order that includes all whales, dolphins and porpoises.Know More
Research indicates that dolphins may use their teeth as receivers for echolocation signals, a type of active sonar that cetaceans use to navigate the ocean and locate prey.
Porpoises, which closely resemble dolphins, also have teeth, but theirs are spade-like rather than conical.
There are approximately 73 species of toothed cetaceans, including the sperm whale, killer whale, bottlenose dolphin and beluga whale.Learn more about Marine Life
Among the adaptations of dolphins are hydrodynamic bodies, blowholes on top of their heads, flippers and flukes and echolocation. Some scientists believe that dolphins are able to enjoy the benefits of sleep even while they're in the water by having one half of their brains alert and the other shut down.Full Answer >
Some dolphins can jump as high as 25 feet above the water's surface. Juvenile spotted dolphins have been observed jumping 15 feet. Spinner dolphins get their name from the fact that they spin while jumping. Spinner dolphins can complete seven revolutions in the air before hitting the water.Full Answer >
Wild dolphins usually live for between 25 to 30 years, while dolphins in captivity live to be around 40 years old on average. Few dolphins in the wild die of old age.Full Answer >
Dolphins do not mate for life. A pair of dolphins typically engages in mating for a few days, but then the male goes on to mate with other females.Full Answer >