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
Dolphins are equipped with blowholes on the crowns of their heads through which they breathe air when they reach the surface of the water. They are capable of holding their breath for up to 10 minutes.Full Answer >
In spite of the bottlenose dolphin's gentle appearance, All About Wildlife explains that these animals are in fact apex predators. While great white sharks, tiger sharks and bull sharks occasionally prey on young dolphins, bottlenose dolphins are known to attack and kill sharks. All About Wildlife states that bottlenose dolphins kill or injure sharks by using their snouts to ram the sharks' vulnerable gills.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 >
Dolphins hear when the sounds in the water bounce off the dolphin's jaw bone into the middle ear. Dolphins can hear far better than humans and their hearing is even better than that of dogs.Full Answer >