The tiny Fairy Shrimp are an Order of crustacean. She can be found in ephemereal, or "vernal", pools in habitats as diverse as desert pools and mountain tarns. Fairy Shrimp lack a carapace. She feeds swimming upside-down, filtering organic particles from the water, or will graze upon algae. Her role in the food chain is an important one, and she is preyed upon by many fish and bird species.