Orcas

Alaska's orcas are some of the most majestic sea creatures in the world. Also known as killer whales, Alaska orcas belong to the dolphin family and are identified by their glossy black color and stunning white patches over their eyes. Alaska orcas have a distinctive patch two inches behind their dorsal fin, which helps scientists differentiate individuals in the same pod. Alaska's orca populations can be split into two distinct genetic groups: fish-eating "resident orcas" and mammal-eating “transient orcas.” Every Alaska orca has a unique shape and coloration—like fingerprints for humans—created by the faint patch behind its dorsal fin. The Alaska orcas emit powerful sonar clicks, which are easily picked up by other nearby pods of orcas.