by hidding in the water
the blue whale doesn't have no predators unless a group of killer whales attack it
Only Killer Whales (Orcas) prey on gray whales.
seals or sealions
They are predators.
It is not so much that sharks are scared of killer whales, more that they are prey of killer whales. The killer whale is the oceans number one predator but this does not mean to say that as its prey the shark is scared of it. There are thousands of types of sharks. So on the whole some sharks are quite likely to be afraid of killer whales where as others probably not.
KIller Whales do not attack sharks and they do not attack anything that they see. Killer Whales only eat small sharks and fish because No creatures are mindless killers there is always a reason
Yes
Humpback whales don't usually attack other species of whales. Killer Whales are the only whales known to do that.
Most whales cannot fight (despite the fact that they're, like, the largest mammels on Earth). But Killer Whales do fight/attack/take charge of their prey - by biting.
Fisherman hunt them,so they are told to attack other dolphins, but not hurt the killer whale/Orca.They die easily because the prey hunted not protected.
Maybe on the dead ones, or a calf straying away from its parents. But no shark would dare attack a healthy adult.
leopard seals preys on them and their prey is fish.