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英文字：，建议阅读时间：看水平

..02.13

这周又要来讲虎鲸了，没办法，因为爱嘛，这周的两篇将着重系统科学的为大家介绍虎鲸家族，你别以为虎鲸就一种，其实里面也有好几种，各自有着不同的习性与外貌差别，这一期主要介绍虎鲸的种类，以及形态差别。仔细研读吧inEnglish.（严肃认真脸）

Name:Killerwhale/Orca

Scientificname:Orcinusorca

Whatarekillerwhales?

Killerwhalesareamarinemammal,whicharedolphinsalthoughtheirnamesoundsliketheyareawhale.Theirnamekillerwhalewasoriginallywhalekillerastheywillhuntwhalesinbigpod(apodisthenameforagroupofdolphins)whichwasobservedbyancientsailorsbutovertimethenamegotchangedtokillerwhalewhichgaveoffthewrongimpression.EventheLatinnameOrcinusorcaalsogivesofftheimpressionofhuntingandeatingwhalesasthewordOrcinusorcatranslatesinto“OrcaoftheKingdomofthedead”whichgivesoffanevilimpression.

Whenmentioningkillerwhales,peoplewillthinkofonekindofkillerwhalebuttherearedifferentspecieswhichdohaveslightdifferencesinimagesanddiet.

·Typesofkillerwhales

1.Resident

Thesearefish-specialisttheynormallyliveinsmallrangesthatarearoundareasthathavealotofbigfishpopulations,theorcasthatliveinthenorthandthesouthofthePacificwillmainlyeatsalmon,whiletheresidentAlaskanorcaswilleatmultiplefishspeciessuchassalmon,mackerel,halibutandcod.ResearchontheorcasthatliveintheRussianandjapanscoastlineswilleatsalmonandmackerel.

Theseorcasliketoliveinabig