The scatter symbol is the dolphin. To trigger the Bonus game, an oyster figure has to appear both on the first and last reels, regardless of its position in the reel. During the Bonus game, 5 rows of 5 oysters each appear and the player has to select one oyster from each row. If the player reaches the final chest, an additional prize is awarded. The wild symbol is the treasure chest, which replaces all other simple figures. Also, the treasure chest expands to all the reels positions if doing so awards additional prizes.
Use the trophy button and you will see the Paytable, the "?" button shows the help pages and the mute button silences the game.