horny plates which hang from the roof of the mouth in some whales (Mysticeti), e.g. right whales and rorquals. The plates filter out krill (small shrimplike crustaceans) from the sea water as it is forced out of the mouth.
Whales evolved from wolf-like land ancestors more than 50 million years ago, only later splitting into the two groups seen today: toothed whales and baleen whales, which feed by straining small marine organisms out of the seawater.
The baskets made by Alaska Natives are commonly constructed of birchbark or cedar, beach grass, dried grass, spruce or willow root and baleen. Examples of this are baleen baskets, which are native to the northern coastal whaling villages, birchbark baskets created by the interior Athabaskan peoples and the grass baskets generally made in coastal and riverside villages where beach grass abounds.
ISLAMABAD -- Using computer simulation of a fin whale head, scientists have discovered that the skulls of at least some baleen whales have acoustic properties that capture the energy of low frequencies and direct it to their ear bones.
Paradoxically, this gigantic baleen whale is an extreme specialist, feeding almost exclusively on two species of tiny krill (small, shrimp-like marine animals about 5 centimetres long and weighing about 2 grams!).