The hunting patterns and techniques of whales vary and depend on the species. The diet of can also be very different between certain whale species. For example, Killer Whales eat fish, seals, walruses, squid, birds, penguins, shark, polar bears and even other whales! They will hunt anything and everything that is available. They often work in pairs while hunting, surrounding and then pulling their prey down into the water, drowning them. Whatever the number of Killer whales in a pod, they will distribute the meal equally. Humpback whales, work in a large group while hunting and have a very elaborate technique called bubble net feeding. This involves the pod of whales circling a school of fish quickly while blowing bubbles. The fish the are too worried to cross the bubbles which traps them inside this ring which can measure in 100ft in diameter! The whales gradually make the ring of bubble smaller and quickly, the humpback whale surprise the fish and eat them. Blue Whales simply take large intakes of water where Krill (tiny fish) are located. These are just three of the several hunting patterns that different species of whales have developed and perfected for them to survive.