1.海豚(Dolphin)

　　Inthevastoceanlivemanycreatureswithgreatintellectualandphysicalcapacities.Dolphinisoneofthosegreatcreatures,whosecapacitiestothinkandmoveatanastoundingratepuzzlethosewhostudytheirbehaviors,Dolphinspossesssomethingthatmakesthemdifferentfromalltheotherseacreatures.Itisnotstrengthorspeedbutthesizeoftheirbrains.Dolphin'sbrainisalmostthesamesizeasthatfoundinthehumanhead.Theyliveforalingtime.

　　Dolphins'babiesareborninthewater.Theycangrowuptothreeandahalfmeterslong.

　　Dolopinsusesoundtohelpthemfindtheirway,lookfortheirfoodandtalkwitheachother.Soundisjustliketheireyesandmouths.

　　海豚

　　大海里住着许多智力发达、身体强健的动物,海豚就是其中之一.它反应灵敏、动作迅速,让那些研究它们行为的人们深感震惊.海豚拥有一些与其它海洋生物不同的地方,它的优势不在于它的力量和速度,而在于它的大脑.海豚的大脑与人脑大小一样大.它们的寿命很长.

　　海豚在水里生育,它们能长到三点五米长.

　　海豚利用声音帮助自己认路、觅食与彼此之间交谈.声音就像它们的眼睛和嘴一样.