Milky Way Lagoon
A Rock Islands lagoon with white limestone mud on the bottom, used as a skin treatment.
Updated 3 September 2026
UNESCO World Heritage
The Milky Way is a small enclosed lagoon in the Rock Islands where limestone from the surrounding cliffs has broken down into a fine white mud on the bottom, and the water above it turns a pale opaque blue-white, which is where the name comes from. Boats stop and people dive for the mud and coat themselves in it. It sits inside the Rock Islands Southern Lagoon World Heritage property.
What's there
- The white water - the pale opaque colour from the limestone mud below.
- The mud - the fine white sediment divers bring up from the bottom.
- The enclosed lagoon - the sheltered water between the Rock Islands.
- The World Heritage setting - part of the inscribed southern lagoon.
When to go
November to April is the drier season. Boat trips run through the year and stop here on most Rock Islands itineraries. Rain clouds the water further.
Things to know
It is on every tour boat itinerary and can be crowded with several boats at once. The claimed skin benefits of the mud are folklore rather than established. A Rock Islands permit is required.
Nearby
Nikko Bay is northeast, and German Channel is south.
What to pack for Milky Way Lagoon
Chosen from what this place is for. Tap a kit for the full checklist.
- Broken-in walking shoes or boots - Grip and ankle support matter more than looks; never hike in brand-new boots. Find on Amazon
- Reef-safe sunscreen - High SPF that will not bleach the coral you are swimming over. Find on Amazon
- Your own mask + snorkel - A well-fitting mask is the single biggest comfort upgrade underwater. Find on Amazon
- Layers + a waterproof shell - Mountain weather turns fast; a packable rain jacket saves the day. Find on Amazon
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All packing kitsPlan your trip
Where to start if Milky Way Lagoon is going on the list.
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Opening times, ticket prices and seasonal closures change - check the official source before you go: official site.




