Tardigrades!!! - pretty much the coolest animal known to man. can survive space, radiation...amazing...
Tardigrades (
/ˈtɑːrdɪɡreɪd/), known colloquially as
water bears or
moss piglets,are a
phylum of eight-legged
segmented micro-animals.They were first described by the German zoologist
Johann August Ephraim Goeze in 1773, who called them
Kleiner Wasserbär ("little water bear").In 1777, the Italian biologist
Lazzaro Spallanzani named them
Tardigrada /tɑːrˈdɪɡrədə/, which means "slow steppers".
They have been found everywhere in Earth's
biosphere, from mountaintops to the
deep sea and
mud volcanoes,and from
tropical rainforests to the
Antarctic. Tardigrades are among the most resilient animals known, with individual species able to survive extreme conditions — such as exposure to extreme temperatures, extreme
pressures (both high and low), air deprivation,
radiation,
dehydration, and
starvation — that would quickly kill most other known forms of
life. Tardigrades have survived exposure to
outer space. There are about 1,300 known species
[15] in the
phylum Tardigrada, a part of the superphylum
Ecdysozoa consisting of animals that grow by
ecdysis such as
arthropods and
nematodes. The earliest known true members of the group are known from
Cretaceous (145 to 66 million years ago) amber, found in North America, but are essentially modern forms, and therefore likely have a significantly earlier origin, as they diverged from their closest relatives in the
Cambrian, over 500 million years ago.
Tardigrades are usually about 0.5 mm (0.020 in) long when fully grown.They are short and plump, with four pairs of legs, each ending in claws (usually four to eight) or suction disks. Tardigrades are prevalent in
mosses and
lichens and feed on plant cells, algae, and small invertebrates. When collected, they may be viewed under a low-power
microscope, making them accessible to students and amateur scientists.
https://en.wikipedia.org/wiki/Tardigrade