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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