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ScienceDolphins:Mammalsof the Sea  \nWord count:1,073  \nNote:The total word count includes words in the running text and headings only.Numerals and words in chapter titles,captions,labels,diagrams,charts,graphs,sidebars,and extra features are not included.  \nDolphins:Mammalsof the Sea  \nby Morgan Lloyd  \nScott Foresman  \nis an imprint of  \nPEARSON  \nGlenview,Ilinois·Boston,Massachusetts·Chandler,ArizonaUpper Saddle River,New Jersey  \nEvery effort has been made to secure permission and provide appropriate credit forphotographic material.The publisher deeply regrets any omission and pledges tocorrect errors called to its attention in subsequent editions.  \nUnless otherwise acknowledged,all photographs are the property of Scott Foresman,a division of Pearson Education.  \nOpener:Digital Vision;1 ODK Images;3 Digital Vision;5 ODK Images;7 ODK Images;8 CDK Images;9 CDK Images;10 ODK Images;11 CDK Images;13 ODK Images;14 ODK Images;15 ODK Images  \nISBN 13:978-0-328-51661-2  \nISBN 10:  \n0-328-51661-9  \nCopyright o by Pearson Education,Inc.,or its affiliates.All rights reserved.Printed in the United States of America.This publication is protected by copyright,and permission should be obtained from the publisher prior to any prohibitedreproduction,storage in a retrieval system,or transmission in any form or by anymeans,electronic,mechanical,photocopying,recording,or likewise.For informationregarding permissions,write to Pearson Curriculum Rights &Permissions,One LakeStreet,Upper Saddle River,New Jersey 07458.  \nPearson is a trademark,in the U.S.and/or in other countries,of Pearson plc or itsaffiliates.  \nScott Foresman®is a trademark,in the U.S.and/or in other countries,of PearsonEducation,Inc.,or its affiliates.  \n2345678910 V05413121110  \nDolphins belong to a group of animals calledmammals.Similar to other mammals,dolphinsare warm-blooded.They live underwater,butthey have lungs and breathe air.They must cometo the surface to breathe.  \nUnlike fish,dolphins do not hatch fromeggs.They are born live and drink milk fromtheir mothers.When they are born,they havewhiskerlike hairs on their snouts.Most dolphinslose these hairs soon after birth.  \nThere are more than thirty different kinds ofdolphins.They live in every ocean in the world,from Arctic seas to tropical waters.They can befound both near to and far from shore.Althoughthere are many kinds of dolphins,they all havesome body parts in common.  \nThe flaps on a dolphin's tail are called flukes.The flukes and tail provide the power to helpdolphins swim and leap through the water.Theflippers are also called pectoral fins.They help adolphin steer.Fluke4  \nAll dolphins have blowholes at the top of theirheads.This is how they take in air.The mouthof a dolphin is called its beak.The shape of thebeak can vary greatly among different kinds ofdolphins.  \nUnder their thick,flexible skin,dolphins havea layer of fat called blubber.The blubber helpskeep them warm in the cold ocean waters.  \nThe number of teeth a dolphin has varies,butall dolphin teeth are cone-shaped.  \nJawbone withBlowholeteethPectoral fin(flipper)  \n# Dolphin Communication\n\nDolphins are amazing communicators.Theymake several kinds of sounds.They can makewhistling and clicking noises.They can evenmake sounds that resemble chirps,yelps,andsqueaks.  \nMany dolphins have their own special  \nwhistles.As dolphins travel together in groups,they may repeat their own whistles from time totime.These signature whistles may help dolphinsknow who is around them.After a baby dolphinis born,the mother may whistle to the baby forseveral days almost without stopping.This helpsthe baby dolphin learn its mother's whistle.  \nBowriding  \nDolphins are often seen riding the waves infront of boats.This is called bowriding.Whendolphins bowride,they get an extra push fromthe water in front of the boat.This extra pushfrom the water allows them to glide along,risingto the surface when they need to breathe.Bytraveling this way,they use less energy.  \n7  \nBo","cbCailUAI7uLBSJL","https://ap.wps.com/l/cbCailUAI7uLBSJL","pdf",2380797,"English","# Dolphin Communication\n## Dolphin sounds and signature whistles\n## Bowriding and energy saving\n## Bottle-nosed dolphin overview","[{\"question\":\"Why do dolphins have to come to the surface?\",\"answer\":\"Dolphins live underwater, but they have lungs and must breathe air, so they come to the surface to breathe.\"},{\"question\":\"What kinds of sounds do dolphins make to communicate?\",\"answer\":\"Dolphins make several kinds of sounds, including whistling and clicking noises, and sounds resembling chirps, yelps, and squeaks.\"},{\"question\":\"How do signature whistles help dolphin groups and babies?\",\"answer\":\"Many dolphins have special whistles that can help them recognize who is around. After a baby dolphin is born, the mother may whistle almost without stopping for several days, helping the baby learn the mother’s whistle.\"}]","Dolphins - Mammals of the Sea - Dolphin Communication | PDF",1790602247]