Lobsters have blue blood.
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The Lion's Mane Jellyfish is the largest jellyfish in the world. They have been swimming in arctic waters since before the dinosaurs (over 650 million years ago).
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Mosquitoes prefer certain blood types, and people with the “O” blood type are more likely to get bitten.
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Dolphins sometimes have fun by blowing bubbles and creating rings of air underwater, which they then swim through.
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There's a phone app called RoboRoach that allows you to remotely control a cockroach through a chip that you to manually implant into the unwitting critter.
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