Turtle Zone

The Turtle Zone is a zone in Super Mario Land 2: 6 Golden Coins. It is located underwater beneath a floating island, and is accessed when Mario is eaten by a giant turtle on the island. The zone consists of four levels, including the boss's level inside a whale and a secret stage from the submarine to the second floating island. Mario needs to be tiny in order to access the secret course inside the submarine. Notably, the secret course has a series of coins spelling "Mario Land 2", but Wario appears to have flipped the "M" upside down. Once Mario clears the secret course in this zone, the whale will awaken and blink its eyes rapidly as if trying to go back to sleep.