The killer whale is actually one of the few enemies you face in the game. They are often much larger than you, and can be dangerous adversaries.
If you're having trouble with killer whales, try these tips:
* Avoid them: They're often found in deep water, so stick to shallower areas.
* Use your speed: They are slower than you, so try to outmaneuver them.
* Attack their tail: This is a weak point, and it can stun them for a few seconds.
Remember, the goal of the game is to become the ultimate apex predator, so it's unlikely the developers would let you play as something that can be killed by a killer whale!