Orcas use waves to hunt seals

Interesting video by the Lindblad Expedition:

http://www.2muchmedia.com/Orcasfinal2.html

very cool stuff, got to love organised hunting.

I have seen something similar with orcas somewhere else where there was no ice. Same thing as well they were practicing and didn't kill the pray.

Thats more advanced than humans that still kill prey with no intention of eating it.