Marine mammal
Marine mammal means those specimens of the following orders, which are morphologically adapted to the marine environment, and whether alive or dead, and any part thereof, including but not limited to, any raw, dressed or dyed fur or skin: Cetacea (whales, dolphins, and porpoises) and Pinnipedia, other than walrus (seals and sea lions).
Source
50 CFR § 216.3
Scoping language
In addition to definitions contained in the MMPA, and unless the context otherwise requires, in this part 216: