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Published byCharity Moore Modified over 9 years ago
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4.Dolphins & Porpoises 1
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Dolphins and porpoises are toothed whales 2 They have streamlined bodies and powerful tails that help them to move easily through the water
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Like other whales, dolphins and porpoises have a layer of blubber that keeps them warm 3 Hourglass dolphins
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Dolphins and porpoises are alike in many ways 4 The main differences in these two mammals is the shape of their snouts and teeth (like gators and crocs!) Dall’s Porpoise
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Dolphins have beaklike snouts and cone-shaped teeth 5 Porpoises have rounded snouts and flat teeth
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Common dolphins grow to be about 7 feet long 6 They have black backs, gray sides, and white bellies
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Common dolphins live in warm waters and often follow ships for miles 7
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Bottle-nosed dolphins are the most familiar dolphins 8 They may grow to be 12 feet long and are gray in color
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Bottle-nosed dolphins are very social and seem to be very friendly toward people 9
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Killer whales are the largest kind of dolphin 10 They grow to be 30 feet long
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Killer whales travel in pods and are often found in colder northern waters 11 Along the coast of Alaska is a great place to find the killer whale in the summer
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Porpoises are smaller than dolphins and can grow to about 6 feet long 12 Common porpoises have black backs and white bellies
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Unlike dolphins, porpoises avoid people and often travel alone 13 Dolphins and porpoises are very intelligent animals
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They communicate with each other by making chirping sounds 14 Many dolphins and porpoises live in groups that play and hunt for food together
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Dolphins and porpoises help members in their group that are in trouble 15 They have also been known to help people in trouble in the waters
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