Triops—also known as “tadpole shrimp”—are a genus of miniature crustaceans that have been around for 300 million years. There’s differing species of Triops, varying in size and color, but the one trait seen in all of them is their eggs undergoing a form of suspended animation when faced with adverse conditions. Called “diapause,” the eggs won’t hatch until in contact with an adequate water supply. Similar to Sea Monkeys, Triops hatching kits are available in all major toys stores. Now go forth and nurture your own prehistoric abomination!