47 meters underwater caged

Your friend has got you to scuba dive with them. Your not so sure of the idea, but when you see the crystal clear waters and the glistening night sky, you decide to. The cage snaps from the wire it was connected to, and now you are 47 meters underwater stuck in a cage. Can you find safety without getting eaten by the shark. To survive, you need to follow a few simple rules... 1. DO NOT abandon your friends. 2. DO NOT go near the shark. 3. The island is safe but difficult to get to. 4. s.u.r.v.i.v.e