This is for example an irritating and common behavior of Gastrotrichs and Catenulida.

However, we’ve since learned that gastrotrichs are microorganisms that can be found in marine biomes.

Protozoa, rotifers, gastrotrichs, nemertines, turbellaria, entomostracans (copepods, cladocera, and ostracoda), nematodes, microoligochaeta (naidids and enchytreids) and freshwater mites can be represented in the samples.

They share characteristics with both gastrotrichs (phylum of aquatic, somewhat wormlike organisms) and arthropods.

You wait until the animals (rotifers, gastrotriches, nematodes, protozoa, etc.) resume their normal activity, and you suddenly add a double volume of almost boiling water.

A collection of meiofauna organisms (Annelids, Gastrotriches, Kinorhynchs, Loricifera, Nematodes, Platyhelminthes, Rotifers, Tardigrades) from global sediments is also accessible and available (colhelper.mnhn.fr).

The general Meiofauna collection is made up of several collections: the free living marine Nematodes, Gastrotrichs, Kinorhyncha, Tardigrades, Turbellaria, Rotifers, Annelids, and various minor groups.