gray whale

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun A baleen whale (Eschrichtius robustus) of northern Pacific coastal waters, having grayish-black coloring with white blotches and lacking a dorsal fin.

from the GNU version of the Collaborative International Dictionary of English.

• (Zoöl.) a rather large and swift baleen whale of the northern Pacific (Eschrichtius robustus, formerly Rhachianectes glaucus), having short jaws and no dorsal fin; -- called also grayback, devilfish, and hardhead. It grows to a length of 50 feet (sometimes 60 feet). It was formerly taken in large numbers in the bays of California, and is now rare. It lives up to 50 or 60 years and adults weigh from 20 to 40 tons.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun A baleen whale, Eschrichtius robustus, from the north Pacific

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun medium-sized greyish-black whale of the northern Pacific