baleen

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baleen:

see whalewhale,
aquatic mammal of the order Cetacea, found in all oceans of the world. Members of this order vary greatly in size and include the largest animals that have ever lived. Cetaceans never leave the water, even to give birth.
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baleen

[be′lēn]
(vertebrate zoology)
A horny substance, growing as fringed filter plates suspended from the upper jaws of whalebone whales. Also known as whalebone.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

baleen

whalebone
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005