Tardigrade are not human.
Cyclomorphosis ( also known as seasonal polyphenism ) is the name given to the occurrence of cyclic or seasonal changes in the phenotype of an organism through successive generations . Ecdysozoa [ ˌɛkdɪsoʊ-ˈzoʊə ] is a group of protostome animals , including Arthropoda ( insects , chelicerata , crustaceans , and myriapods ) , Nematoda , and several smaller phyla . Tardigrades ( [ ˈtɑrdᵻˌgreɪd ] also known as water bears , space bears , or moss piglets ) are water-dwelling , eight-legged , segmented micro-animals . Tardigrades are one of the most resilient animals known : they can survive extreme conditions that would be rapidly fatal to nearly all other known life forms .