When I would be a shark and came across a whale, no matter its size, I would bite off its fins and start eating. Same with a big ray. How do those animals survive so long anyway?
In: Biology
Seems like no one has brought up cookie cutter sharks yet. There is a whole species of deep sea dwelling shark that is adapted around taking a little bite out of larger fish/sharks/whales. Cookie cutters bite so well and often that the US navy had to redesign some of its submarines! The size ratio means that even if something like a cookie cutter shark takes a bitE out of a blue whale that the ratio of lost flesh is probably similar to a tick taking some of your blood.
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