Sea Diver (also released as Aqua Diver) is an odd cross between a game, a toy, and a scientific experiment. Operating on principles of compression discovered by Rene Descartes during the 17th century, Sea Diver is a flexible plastic tube about the size and shape of a 1 liter soda bottle. You fill the bottle with water and add aquarium gravel, salvage items (anchor, cannon, pistol, sextant, and lantern), and the diving bell. When you squeeze the bottle, the diving bell (looking like something Jacques Cousteau would carry on board the Calypso) descends to the bottom of the bottle while the claws on its bottom open. Release the pressure, and the claws close while the bell ascends to the top. Two games may be played...Salvage Hunt: Be the first player to pick up, one at a time and in the correct order, the anchor, cannon, pistol, sextant, and lantern. The Sea Diver is passed from player to player, each getting one attempt, until a winner is determined.Drop Anchor: A player brings the anchor to the top of the bottle, releases it, and tries to catch it before it touches the bottom. The player earns 1 point for each successful catch. The winner is the player with the most points after 10 tries. - BoardGameGeek