Mystical Submarine Treasure Adventure

The life under the water surface has always drawn your curiosity and that is the reason you have opted to become a deep sea diver. You have gone to the bed of the sea many times to see the spectacular environment and living creatures dwelling there but this time something else has caught your attention. Yes, a huge treasure chest and a broken submarine close to each other. The tricky thing about both the things is that they are locked. You will have to find the appropriate key to open the locks that will be obstructing your progress. You have to make sure that you do not overlook any of the hints because that will increase the confusion.