津軽海峡
The Ocean's seven is a collection of seven channel swims: (1) North Channel between Ireland and Scotland, (2) Cook Strait between the North and South Islands of New Zealand, (3) Molokai Channel between Oahu and Molokai Islands in Hawaii, (4) English Channel between England and France, (5) Catalina Channel between Santa Catalina Island and Southern California, (6) Tsugaru Strait between the islands of Honshu and Hokkaido in Japan, and (7) Strait of Gibraltar between Europe and Africa. Irish swimmer Steve Redmond became the first person to complete the Ocean's seven upon completing the Tsugaru Strait on May 15, 2012.