Vanilla Secret 3

Vanilla Secret 3 is a level in Super Mario World. It is located in the Vanilla Dome, and it can be accessed by completing Vanilla Secret 2. Clearing this level requires either jumping on Dolphins or swimming through the water. The Dolphins are harmless, but they can be eaten by Yoshi in the Japanese version and the GBA remake. Some Dolphins jump and dive, while others go vertical.

The only enemy in the level is a Porcu-Puffer, which appears upon reaching the first vertically-jumping Dolphin halfway through. Near the end, there are coins in the shape of arrows pointing to the right, one of which is a Dragon Coin. The level ends with a green horizontal Warp Pipe, leading to the goal. Completing this level unlocks Vanilla Fortress.