Domville Island is an advanced boat dive off the west side of Domville Island in the Sidney area, usually run as a drift dive. Divers are dropped into a protected cove and swim out into the current along a cold-water wall and drop-off. The route rewards solid buoyancy and careful gas planning more than speed. Expect anemones, tube worms, ling cod, crabs, abalone, urchins, and cabezon.