Tardigrada (Water Bears)
http://www.micrographia.com/specbiol/tardigra/tardig/tard0100.htm

Micrographia


This reference page offers a brief description of Tardigrades, also known as water bears. It includes information about their physical appearance, an explanation of their name, likely habitats, internal organs and other distinguishing features, and a few images. A diagram of a common tardigrade, Macrobiotus macronyx, is also provided via an internal link.

This resource is referenced here:
Subject: Biology, :Evolution, Ecology:Metabolism, Biology:Microbiology
Resource Type: Scientific Resources:Overview/Reference Work
Grade Level: College Lower (13-14), High School (9-12), Middle (6-8), Intermediate (3-5)
Topics: Biosphere:Ecology:Habitats, Biosphere:Evolution, Microbiology, EcologyKeyword: tardigrada