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=Taxonomy= short description of the suborders |
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==Taxonomy==
Cetaceans are divided into two suborders:
*The [[baleen_whales]] are characterized by the [[baleen]], sieve-like structures in the upper jaw made from [[keratin]], which they use to filter plankton from the water. They comprise the largest living animal species.
*The [[odontoceti|toothed_whales]] possess teeth and prey on fish or squid. An outstanding ability of this group is to perceive their environment by [[echolocation]].
A complete up-to-date taxonomical listing of all cetacean species, including all whales is maintained at the [[Cetacean]] article.
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