Quote Originally Posted by Vincent Butler View Post
And they are big enough the orcas can't do much about it. And since they are aggressive towards Orcas, instead of fleeing, then the Orcas certainly won't want to mess with them.
Orcas are known to attack sperm whales. There's at least one recorded (on camera) instance of humpback whales stopping an orca attack on a sperm whale and her young.