Kirby's Return to Dream Land icon
|A place in|
|Common enemies||Barbar, Barracu, Bite Statue, Blipper, Bronto Burt, Broom Hatter, Bulby, Cappy, Chilly, Clayn, Craby, Foley, Glunk, Gordo, Hot Head, Lanzer, Leafan, Noddy, Parasol, Parasol Waddle Dee, Pierce, Poppy Bros. Jr., Search, Shipwreck Octopus, Shotzo, Sodory, Sparky, Squishy, Super Chilly, Super Hot Head, Waddle Dee, Waddle Doo, Walf, Water Galbo|
|“||Ready to get wet? Strong currents and lots of underwater caverns will put Kirby's swimming skills to the test in this tropical world.”|
|— Official Kirby's Return to Dream Land website|
Onion Ocean is the third level in Kirby's Return to Dream Land. It takes place in tropical islands, aquatic caverns, and rocky shores. Kirby and his friends trek through this ocean in order to find the Lor Starcutter's left wing.
|“||A stage that has the deep blue sea as its setting. Mind your head - those coconuts are heavy!”|
|— Official European Kirby's Return to Dream Land website|
- An area resembling Onion Ocean is depicted in concept artwork for Kirby GCN, the unreleased game that was reworked into Kirby's Return to Dream Land.
- A remix of Kine's theme from Kirby's Dream Land 2 plays in Stages 1 and 4 of Onion Ocean.
- Part of the music that plays in Stage 4 was remixed into the music for Stage 1 of Fine Fields in Kirby: Triple Deluxe.