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Last updated on April 19, 2014 at 1:20 EDT

Killer Whales Near the San Juan Islands

September 14, 2012

This shows southern resident killer whales in the waters around the San Juan Islands, USA and British Columbia. Both male and female killer whales will remain with their mothers throughout their lives. Adult male killer whales are easily distinguishable from females by their considerably larger dorsal fins.

Credit: Center for Whale Research