Adult Gray Whales weigh 30-40
tons and measure about 45 feet (14
meters); they have dark skin with gray
patches and white mottling, the calves
are born dark gray to black (sometimes
with distinctive white markings). They
are baleen whales (with a series of
130-180 fringed overlapping plates
hanging from each side of the upper jaw
in lieu of teeth), as such they feed by
drawing sediment and water into their
mouths, expelling the water and sediment
through the baleen plates, leaving the
trapped food ready to be swallowed.
Courtship and mating behavior are complex, and frequently involve 3 or more whales of mixed sexes (one on top to keep the the other two down), They make one of the longest of all mammalian migrations averaging 10-14,000 miles ...