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. 　　2.Dolphin-海豚 　　.