1) Cetacean of the Arctic Ocean 2) Pacific dweller 
a slender baleen whale having a profusion of external parasites that give it the appearance of a barnacle-encrusted rock.[5 related articles]
a marine mammal that can grow to 45 feet long and 40 tons; feeds on krill and amphipods, lives in the eastern North Pacific, and migrates about 12,000 miles from Alaska to Mexico yearly; formerly also inhabited the Atlantic Ocean, but was probably hunted to extinction there
[n] - medium-sized grayish-black whale of the north Pacific