Toothed whales include pilot whales, sperm, beluga and many others. They are divided into two distinct groups – baleen whales, and toothed whales.īaleen whales include the larger variety of filter feeding whales (the blue whale, humpback whale, and sei whale among others). The dolphin is part of the group of mammals called cetaceans. They are also highly intelligent and can learn to do different tasks just through observation. The largest dolphin is the killer whale, which can grow up to 31.0 ft (9.5 m) in length, weighing 22,000 lb (9,980 kg).ĭolphins are meat eaters and have a steady diet of squid, fish and crustaceans.Īlthough the coloration of the dolphin varies, they are most often grey, with their backs having a slightly darker shade than the rest of their bodies.Īgile swimmers, dolphins are a favorite for wildlife watchers as their playful activities and aerobatics in the water are a delight to see. The smallest, the maui dolphin, grows to an average 5.6 feet (1.7 meters) in length, and weighs 90 – 110 pounds (40 to 60 kg). Around 35 of the species live in oceans, while five of the living dolphin species live in rivers. The 40 different species can be found in a vast geographic region, which makes it very difficult to estimate the current population of dolphins. Some species like Killer Whales might eat seals & turtles & other marine mammals Worldwide, although they avoid polar zonesįish, squid. They are members of the order Cetacea, of which there are four families, the oceanic dolphins (Delphinidae), Indian river dolphins (Platanistidae), the new world river dolphins (Iniidae), and the brackish dolphins (Pontoporiidae).īetween these four families, there are 40 distinct species of dolphin. They usually inhabit shallow seas and continental shelves. The dolphin is a small to medium-sized marine mammal, which are found all over the world, generally in warmer waters.
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