Your mission in this unique game is to explore the seas in your submarine and find hidden treasure in deep waters. Discover all three routes of the Kaluha Triangle to find as much treasures as possible. Rig up your submarine in order to reach greater depths. Dolphins which accompany the ship sometimes give hints. Use the LEFT and RIGHT ARROW KEYS to navigate the ship. Press SPACEBAR to drop a submarine. Use the ARROW KEYS to control the submarine. Press "A" KEY to grab treasures. Also keep your eye on oxygen, battery and pressure. Have fun!