Baleen n. : Plates or blades of "whalebone," from two to twelve feet long, and sometimes a foot wide, which in certain whales (Balaenoidea) are attached side by side along the upper jaw, and form a fringelike sieve by which the food is retained in the mouth.

Example:
What is the easiest and cheapest way to get a specimen of Baleen?

Taxonomy
baleen, baleen whales, Whales, baleen plates, upper jaw, hair, baleen plate, whalebone, free encyclopedia, filter feeding, feed, bone, species, mouth, prey, search, teeth, edges.

Defination from the web:
baleen plates in the upper jaw – flat, flexible plates with frayed edges, arranged in ... The blue whale, the largest animal alive and probably the largest animal to ever have lived, is a baleen whale. ...