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RazorRuss t1_j57wgg0 wrote

Or they made a wrong turn lol

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cittatva t1_j592hb5 wrote

Or the oceans have become relatively dirtier.

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DarthBluntSaber t1_j5a6hbf wrote

Yeah this is my thought as well. The ocean has just become dirty enough that it there isn't a difference to them

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loki-is-a-god t1_j5a5qe9 wrote

My first thought, too. Smart animals can still make bad choices.

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