TIL halibut are born with one eye and nostril on each side of it’s head, but the left eye and nostril slowly migrate to the right side as the fish matures. This happens because the bones on the left grow faster than the right.

Read more: https://oceana.org/marine-life/pacific-halibut/

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  1. That’s *how* it happens, but *why* it happens is because the fish is adapted to lay on the bottom of the ocean because doing so incurred an advantage to the more conventional fish ancestor of the halibut. It’s kinda like another way to pull off the stingray lifestyle, very cool!

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