Rescue The Tortoise

Under the sea for an adventurous trip. There a cute  small tortoise  is trapped under a small stone and it needs to goto its parrents. Help that poor tortoise by lifting that stone a little so that the tortoise can escape. All the objects you need are available in the nearby areas where the tortoise is stuck, but not all are kept open. In order to find them and rescue the tortoise you need to solve some puzzles