Turtle Zone

The Turtle Zone is a zone/world in Super Mario Land 2: Six Golden Coins. The zone consists of four levels, including the boss' level inside the whale, and a secret level from the submarine to the second floating island. The whale is not the boss, rather a level. Notably, the special world has a series of coins spelling "Mario Land 2", but Wario appears to have flipped the "M" upside down. Once Mario clears the special stage in this zone, the whale will waken and blink its eyes rapidly as if trying to go back to sleep.