Humpbacks are one of 12 species of baleen whale, characterised
by baleen plates - to aid filter feeding - and two blow holes. To
eat, they take huge gulps of water which is filtered through the
baleens and blown back out through the blowholes, leaving the fish
behind for digestion. They also know the value of teamwork and will
hunt in groups, blowing bubbles to herd fish into a tight ball ripe
for the taking, eating as much as 3,000 pounds a day. This hunting
technique is known as bubble netting.