Sophia Keller
11/03/2020 3:57 AM
Orcas communicate through sounds that they send to each other. Sound waves travel underwater and are received by receptors in an orca's head, in a center called the melon. Orcas can locate landmarks and send and receive signals through series of clicks and whistles. Just as a conversation between humans can be interrupted or even drowned out by external noise such as roar of traffic, construction noise, or even other loud human sounds, orcas can't receive each others' signals when they are drowned out by engine noise from boats and ships. When signals are continually interrupted, the pod can't notify each other of food found by one orca who wants to share it with the rest. They can't coordinate their movements and hunting activities.