HMNZS Canterbury, Northland, New Zealand

Scuttled in 2007 beneath the calm, protected waters of Deepwater Cove — at the mouth of the Bay of Islands, 150 miles north of Auckland — HMNZS Canterbury became the most recent of three New Zealand Navy frigates sunk as artificial reefs in the island-nation’s emerald waters. The Canterbury’s stern meets the seafloor at about 120 feet, but divers can reach the bow at just 60 feet. Must-see features include the bridge and the ship’s helicopter hangar.