: They have massive, reinforced skulls that can break through sea ice up to 20 centimeters (8 inches) thick—and some reports suggest up to 2 feet—to reach air.
: The only large whale that lives in the Arctic year-round. bowhead whale
: As filter feeders, they have the longest baleen plates of any whale, reaching up to 4 meters (13 feet) . : They have massive, reinforced skulls that can