英文：Tigersharksarethesecondferociouscarnivoresnexttothegreatwhitesharkinthefamilyofsharks.Theadultsaregenerally3to4meterslong,thelargestcanevenreach7meters.Theirbodiesarefusiform,withathicktorso,theycankillallkindsofmarinefish,mammalsandbirds,turtlesandevenhuman.Knownasthe"tiger"inthesea,whichis