Prepare for treasure hunting at an ocean bottom! Fill cylinders with oxygen, and go on a meeting with adventures! Explore a sea bottom, solve ancient secrets of the seas and oceans, feel yourself as the owner of your own underwater kingdom! Spear fishing begins! Don't hesitate, the fate smiles to the courageous: go to expeditions to the deep blue sea for ancient treasures and test your good luck! Or choose development strategy - equip the underwater territory, erect buildings and extracting platforms, get acquainted with new friends -divers!