What is Marine mammal?
[[File:Humpback_Whale_underwater_shot.jpg|thumb|right|Humpback whale]] '''Marine mammals''' are [[mammal]]s that depend on the [[ocean]] and other [[Marine ecosystem|marine ecosystems]] to live. They include animals such as [[Pinniped|seals]], [[Whale|whales]], [[Manatee|manatees]], [[Sea otter|sea otters]] and [[Polar bear|polar bears]]. [[Cetacean|Cetaceans]] are fully aquatic. Seals and sea-lions are [[Semi-aquatic|semiaquatic]]. They spend the most of their time in the [[water]] but need to return to [[land]] to [[Sexual reproduction|mate]], [[breed]] and [[Moulting|molt]]. Some marine mammals eat [[zooplankton]], others eat [[fish]], [[squid]], [[shellfish]], or [[sea grass]], and a few eat other [[Mammal|mammals]]. {{biology-stub}} [[Category:Marine mammals| ]]