July 24th, 2012. Ocean Gallery: Living Shipwreck This is a 306,000 gallon tank that as its centerpiece has a replica of a U-352 German submarine that was sunk by the North Carolina coast guard during World War II. The major occupants are sand tiger sharks, sandbar sharks, nurse sharks, green sea turtles and green moray eels, but there must be at least 15 species of smaller fish as well. This is a truly amazing tank with the fish swimming all around the sunken submarine, and the wall of viewing windows is large enough to allow for huge crowds to congregate.