Sometimes a species is so complex, so marvelous, or simply so weird that it’s hard to imagine how it could have possibly evolved by natural selection. Among the weirdest is the flounder.
Not many animals would be at home in a world made by Picasso, but the flounder would fit right in. It belongs to a group of fish called flatfish, or pleuronectiforms, that all spend their adult lives hugging the sea floor, where they ambush smaller fish. Flatfish are teleosts, a huge group of fish species that include more conventional creatures like trout and goldfish. While they have a lot of teleost anatomy, flatfishes also have some bizarre adaptations for their life at ninety degrees.
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