Eutardigrada are a class of tardigrades (Tardigrada) without lateral appendages.

Primarily freshwater bound, some species have secondarily gained the ability to live in marine environments (Halobiotus).

By cryptobiosis many species are able to live temporarily in very dry environments.

[2] The order Apochela consists of only one family, Milnesiidae, with two genera: Milnesium and Limmenius.

[1] The mouth of this predator has a wide opening, so the animal can eat rotifers and larger protists.