Search through an ocean of clues, solve a multitude of mysteries, and hunt for heaps of hidden details: these cool picture puzzles, led by a delightful character called Professor Puzzles, offer youngsters a fun challenge that's simply irresistible. What can you see in the two images of the deep blue sea? Something fishy is certainly going on. Try to net all 10 items that have changed from one drawing to the other. Become a super-spy and find the hidden...