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.Continue Reading
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
Lobsters eat fish, worms, mollusks, other crustaceans, plants, sea urchins and snails. They are omnivores, meaning they consume both plant and animal life. Lobsters prefer to hunt and eat live prey but do scour the ocean floor for dead sea creatures when necessary. Some deep-sea lobsters scavenge for large, dead animals such as whales.Full Answer >
Humpback whales do not have teeth, but instead have baleen plates with a multitude of bristles that help them to catch their prey. Spaces between the baleen bristles allow water to pass through while preventing small fish and other foods from escaping.Full Answer >
Some echinoderms eat by everting their stomachs over their prey and digesting them externally; whereas others use modified parts of their skeleton as teeth, tentacles or tube feet to direct food to their mouth opening. Echinoderms are sea animals that ingest nutrition in a variety of ways.Full Answer >
Birds of prey, sharks, large fish, eels and crocodiles are predators of the sea snake. Sea snakes live in shallow waters and breathe air using a long lung that also assists in buoyancy. Although the sea snake isn't aggressive, it produces some of the deadliest venom in the world.Full Answer >