Forest of Illusion 2 is an underwater level in Forest of Illusion. It appears in Super Mario World and Super Mario Advance 2: Super Mario World. Cheep Cheeps and Urchins are predominant in this level.
On the left near the end of the level, there is a Keyhole hidden behind a false wall near the yellow ! Block that brings Mario or Luigi to the Blue Switch Palace; it is also highly populated with Rip Van Fish.