They also use their tail flukes to send walls of water over an ice floe to wash the prey into the ocean. This teamwork also is used when attacking larger whales. Some orcas will bite at the tail of a large whale to slow it while others attack around the head. The large whale is doomed when it tires and sticks out its tongue, an apparent delicacy for killer whales. Once the tongue has been severed, the orcas move on to the rest of the carcass.
Humans have yet to decipher the different calls killer whales use for communication.
They emit these calls when they are separated, meet up with other pods and decide where to go or what to do next. Each pod has its own dialect. Killer whales, the largest of the dolphinlike whales, are found in every ocean, which is why almost every country has its own way of describing the mammal. The predatory habit of the killer whale earned it the name of trasher in England. Killer whales prefer shallow and colder coastal waters.