Tropical Coast: Zone 2
Red Star Ring 1: Use the first juice geyser of the level to propel to a large, open with a few giant oranges rolling around the center. Find a narrow passage on the left side guarded by floor spikes. Halfway across, you'll see the first Red Star Ring.
Red Star Ring 2: A bit later on in the same area, just before luring an apple into a juicer, you'll find the second Red Star Ring in the rightmost tree.
Red Star Ring 3: Midway through the level, you'll land on a globe and be tasked with luring a melon into a juicer. The blade is surrounded with totem poles. Atop one of them is another Red Star Ring.
Red Star Ring 4: In the middle of the large area immediately following the melon geyser, you'll see a small floating island with four enemies and a turret. Jump over to it and defeat all four enemies to make another Red Star Ring appear.
Red Star Ring 5: Near the end of the level, you'll need to lead an apple across a very narrow walkway and into a juicer. Before using the geyser, leap across the platforms on your left to a tree surrounded by several oranges. At the top is the final Red Star Ring.