出典:Wiktionary
出典:Wikipedia
出典:『Wikipedia』 (2011/06/05 12:08 UTC 版)
The bowhead whale (Balaena mysticetus) is a baleen whale of the right whale family Balaenidae in suborder Mysticeti. A stocky dark-colored whale without a dorsal fin, it can grow to 20 meters (66 ft) in length. This thick-bodied species can weigh 75 tonnes (74 LT; 83 ST) to 100 tonnes (98 LT; 110 ST), second only to the blue whale, although the bowhead's maximum length is less than several other whales. It lives entirely in fertile Arctic and sub-Arctic waters, unlike other whales that migrate to feed or reproduce. It is also known as Greenland right whale or Arctic whale. The bowhead is perhaps the longest-living mammal, and has the largest mouth of any animal.