How do orcas find food?

They are fast swimmers, which allows them to catch their prey. They use their big jaws to bite their prey, and their tale to slap them, which will stun them.
they get in large groups and trap the fish one goes in and eats one while the group still traps the fish then a nother one goes in and eats one and it goes on till there is none left.
the way they catch their food depends on if they are in the water or not. if the pray is on land or ice they would either scare the prey into the water then ram them to paralyze them temporarily in order to easily catch them and if they were on thin enough ice they would ram the ice to break it in order to get them.