The biggest thing an orca can kill is the Great White Shark itself, the biggeset species of shark after the prehistoric Megalodon.
The orca hunt Stella Sea-Lions and Harp Seals, Harp Seals too make a target for Great Whites. When they go for the same prey if you compared their size the shark is less than half the size of the whale.
The orca will never let another killer take its prey, so the Orca grasps it in its mouth and turns it upside down, allowing it to suffocate as the gills cannot allow it to breath underwater, and then leaves it to drown, taking its prey.
Usually killer whales kill blue whales.
Killer whales are cute. Before they kill you.
sometimes sharks fight killer whales.
no
They KILL!
Yes, they are carinvores and predators. They even kill whales on occasion.
us humans kill killer whales for food
megalodons ate whales so it ate killer whales too. it ate all whales
yes
Yes, killer whales are super predators. Regardless that killer whales are able to hunt and kill sharks and more likely that sharks will always lose fights against killer whales!
yes a dolphin can kill a killer whale and they do to protect themselves from the whales
No they won't attack anything bigger then them