Together with Princess Rusalka, you will solve an interesting puzzle in the new online game Marine Puzzle. Before you on the screen will be visible a princess. On the sides of it, you will see the silhouettes of fish and other sea creatures. A fish will appear above the mermaid, which you will have to carefully examine. Now, using the mouse, move the fish and put it inside a certain silhouette. If your answer is given correctly, then in the game Marine Puzzle will give glasses and you will go to the next level of the game.