Have you ever seen a 50-foot whale blowing bubble rings? Did you know that humpback whales actually blow bubbles to catch fish? You'll see all this and more on whale-watching Alaska shore excursions!

During "bubble net feeding," one or several whales blow a ring of bubbles from their blowholes as they encircle a school of krill or fish. The whales then swim through the "net" with their mouths open, taking in large amounts of food. What a unique photo opportunity!

Humpback whales regularly b...