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Last one is an ocean sunfish, or mola-mola. They taste like crap and are threatened by plastic bags, because their main diet is jellyfish. They mistake the bags for jellies, eat them, and eventually their stomach fills with undigested plastic.

Attaching a goblin shark from Nat Geo to add to the theme.
goblin-shark-jaw.ngsversion.1445013254494.adapt.1900.1.jpg

informative comment.

The basking shark- nice!!