Games set underwater or in an aquatic environment

Submarines, boats, ships, you name it. Games set underwater, in the deeps of the ocean, or in a less specific aquatic environment are all about doing something on water or surrounded by it. Naval tactical games like the Great Naval Battle series, submarine simulations like Silent Service are common occurrences for this kind of setting, while action games like Aquanox or fishing sports games like Bass Tour are less known but still part of this game group.