A Baleen whale is a different kind of whale, they have baleen instead of teeth. Baleen Whales has a unique filtering system for feeding. They have hair like baleen that strains or filters their food from water. The diet of the Baleen whale changed caused by the ocean currents that flow at the bottom of the earth which lures krill and planktons. Since Baleen Whales don’t hunt for large prey their teeth is no longer in use which makes them form into bristles. The baleen is used like a sieve to catch prey. The Baleen Whales that we have in NZ are Humpback and Southern Right Whales.