RTABC Guide/Treasure of the Ocean Cave
This is a guide for how to beat the star Treasure of the Ocean Cave with 1 A press in an RTABC run.
Method
Start by punch-swimming across the bay. When you are above the entrance to the cave, swim down and enter it. Navigate through the falling pillars and Goombas and DR onto the upper platform. After opening the chests in the correct order, jump up and collect the star.