So tiny that it is barely visible, a water bear has a short, four - segmented body covered with a protective cuticle, and it has eight limbs, each ending in a set of claws.
Loimurid on silmaga vaevu nähtavad, neil on lühike neljalüliline keha, mida katab kaitsekiht kutiikul, ning kaheksa küünisjalga.