Clash Between Orca and Humpback Whales

A BBC/Nat Geo film crew captured some amazing, never-before-seen footage earlier in the year for the Planet Earth Live television series - what is considered to be a humpback whale intervention during a transient orca hunt on a grey whale calf off the coast of California. Watch the full story here: 

http://www.grindtv.com/outdoor/blog/33582/crew+films+extraordinary+clash+between+orcas+humpback+whales/