The Orca Whales are some of the smartest animals on this planet. I remember reading an article a while back about how a group of them off the coast of California had started to hunt sharks. They've figured out that if you turn them over, the sharks become immobile. The scientist were questioning whether or not they learned the behavior from watching humans or did they figure it out on their own haha. Great post, keep them and those photos coming.
RE: An Australian living as an International Expedition guide. Part 1. The journey so far.