Phylum Gastrotricha includes about 430 species worldwide. Members are small to microscopic, free-living, acoelomate, aquatic worms.
Sites 3
- Gastrotricha World Portal Detailed information about these small aquatic organisms, including overview, systematics, evolution, checklists, photos, and movies.
- Gastrotricha Photograph and classification from the Tree of Life Web Project.
- Wikipedia: Gastrotrich Encyclopedia article including anatomy, reproduction and taxonomy.