Towards the end of the show Mike opens the book and shows an underwater picture of the 'lost' shipwreck. If they had a picture, it was already found and the gold would have been taken off.
The crayfish pot has the number 66 on it. They keep saying that the number 66 is the devil's number. But in the Bible the Number of the Beast is 666.
The end of the corpse's arm where the hand was severed shows one circular bone end, but the wrist joint contains eight bones and the forearm contains two long bones, the radius and ulna. If the hand was severed where the scaphoid and the lunate bones adjoin the ends of the radius and ulna, the large ends of those two bones would be visible.