Harbor Porpoises are the smallest cetacean (whale or dolphin) in the Salish Sea. They're also the only year-round cetacean residents. Even the "Southern Resident" population of killer whales spends much of the year outside of the Puget Sound / Georgia Basin area. Because they're here year-round, studying them reveals information about what toxins and diseases are in the water. Usually we don't see much of harbor porpoises—they have only a short fin that hardly breaks the water when they breathe—but viewed from underwater you can see how curious and intelligent they are.

This video was filmed during the SeaDoc Society's March 2014 board meeting and retreat, which took place at the Vancouver Aquarium.