### Question
How is the term marine mammal defined?


### Answer
The term **marine mammal** is defined in *16 U.S.C. § 1362* as the following:

> any mammal which (A) is morphologically adapted to the marine environment (including sea otters and members of the orders Sirenia, Pinnipedia and Cetacea), or (B) primarily inhabits the marine environment (such as the polar bear)

#### Citation:
  - *16 U.S.C. § 1362*
  - Heading: **CHAPTER 31-MARINE MAMMAL PROTECTION > SUBCHAPTER I-GENERALLY**

