Have you ever, or would you ever get in the water with the orcas? I have been close to alot of sharks, for some reason orcas make me nervous.
I have heard the same about sealion/seal fins, BTW
I've never seen one in the wild, and I'd be a bit hesitant given their reputation. OTOH, I know that divers interact with them in Nordic waters, but I think their diet is different there. I really don't think people are on the menu, but I know that they're smart and playful and we might make too tempting a toy.
Check this out.
Diving with orcas
If you google "diving with Orcas" you'll find references from various parts of the world.