This is the third in a three-part series of videos that explores the beauty and mysteries of marine life in ocean settings around the world. For this installment, we travel to Canada, where dolphins, whales, and sea lions congregate in the waters off Vancouver Island. Later, we move on to Barkley Sound in British Columbia, where cameramen scuba dive to capture footage of spectacular shipwrecks -- including a 400-foot Navy destroyer that was sunk on purpose to create an artificial reef. ~ Mark Deming, All Movie Guide