brine shrimp

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. Any of various small crustaceans of the genus Artemia.

Century Dictionary and Cyclopedia

1. n. A small bran-chiopodous crustacean, Artemia salina, found in brackish water and in brine. See Artemia. Also called brine-worm.

Wiktionary

1. n. An aquatic crustacean of the taxonomic order Artemia, one species of which is often marketed under the name Sea-Monkey as a novelty gift.

GNU Webster's 1913

1. n. (Zoöl.) a phyllopod crustacean of the genus Artemia, inhabiting the strong brines of salt works and natural salt lakes. See Artemia.

WordNet 3.0

1. n. common to saline lakes