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Rock Islands Southern Lagoon
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The Rock Islands Southern Lagoon in Palau is a panoramic marine sanctuary and a designated UNESCO World Heritage site since 2012. Spanning over 100,000 hectares, it consists of 445 uninhabited limestone islands of volcanic origin, famously shaped like emerald mushrooms due to centuries of wave erosion at the waterline. The lagoon is renowned for its exceptional marine biodiversity, featuring over 350 coral species and more than 1,500 fish species within its expansive reef system. One of its most distinctive features is the presence of 52 marine lakes, including the world-famous Jellyfish Lake, where millions of golden jellyfish have evolved in isolation. Archaeologically, the islands hold deep significance, with remains of ancient stone villages and burial sites providing evidence of early Palauan seafaring cultures dating back over 3,000 years. The combination of turquoise waters, hidden caves, and dense tropical foliage makes the Rock Islands a premier destination for kayaking and diving, offering a rare glimpse into a pristine ecosystem where geological wonders and biological marvels coexist in a protected and serene environment.
- Location: Palau
- Top sights: Omekang Islands · Long Beach · German Channel
- Nearby: Kloulklubed (10 km)
Best time to visit & climate
The most pleasant time to visit is Feb–Apr.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 | 28 |
| Rain mm | 216 | 198 | 184 | 177 | 285 | 338 | 381 | 286 | 275 | 232 | 236 | 257 |
📋 Practical info
Getting there
This world-renowned UNESCO heritage site is easily accessed by booking an organized boat tour from Koror. Private charter boats are also widely available for hire.
Best season
The dry season from February to April provides brilliant blue skies and prime underwater visibility. During the rainy season, boat rides can often be uncomfortable.
Terrain & paths
The area consists of hundreds of lush limestone islands scattered across a turquoise lagoon. Navigation is primarily done on boats or by swimming in the clear sea.
What to bring
High-quality snorkeling gear, UV-protective clothing, and reef-safe sunscreen are absolute must-haves. Also bring plenty of drinking water and an action camera.
Parking
Rental cars can be conveniently parked at the various departure marinas in the capital city of Koror. Koror serves as the well-suited launch pad for all lagoon tours.
Safety
Always remain alert for boat traffic and potential ocean currents while snorkeling. Touching the fragile corals is strictly prohibited to protect the living reef.
Time needed
To truly experience the dramatic beauty of the lagoon, a full-day excursion is highly recommended. Half-day tours are also offered for a quick initial impression.
Geography
Facts
- Inscribed as a UNESCO World Heritage site in 2012.
- Comprises approximately 445 individual limestone islands.
- Contains the highest concentration of marine lakes globally.
- Home to over 380 distinct species of coral.
- Human settlement traces date back to 3100 BC.
- Famous for the unique 'mushroom' shape of the islands.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Rock Islands Southern Lagoon (3)
German Channel
Man-made channel through the reef, famous for manta rays and sharks.
Sights nearby
Frequently asked questions
What makes the Rock Islands so special?
The unique limestone formations and crystal-clear water create an untouched natural setting.
What is the best way to visit the islands?
Best via boat tour with a licensed operator.
Do I need to buy a permit?
Yes, a special permit is required to enter the protected area.
Can you swim there?
Yes, there are wonderful lagoons that invite you to swim and snorkel.
What should I bring for the trip?
Bring snorkeling gear, sunscreen, and plenty of water.
Rock Islands Southern Lagoon: where is it located?
Rock Islands Southern Lagoon is located in Palau.
Rock Islands Southern Lagoon: what is there to see?
Highlights include Omekang Islands, Long Beach, German Channel.
Rock Islands Southern Lagoon: when is the best time to visit?
The most pleasant time to visit is Feb, Apr.
Rock Islands Southern Lagoon: why is it worth visiting?
The Rock Islands Southern Lagoon in Palau is a panoramic marine sanctuary and a designated UNESCO World Heritage site since 2012.
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Nearby cities
Koror
Koror is the most populous city in Palau and served as the national capital until 2006.
Koror Business District
This district forms the economic heart of Palau.
Airai
Airai is the second most populous settlement in Palau.
Meyuns
Meyuns is a significant village located on Ngerekebesang Island.
Kloulklubed
Kloulklubed is the main village on Peleliu Island.
Ulimang
Ulimang is the administrative center of Ngaraard State on Babeldaob.
Mengellang
Mengellang is the main village of Ngarchelong State at the northern tip of Babeldaob.
Ngerulmud Administrative Center
As the seat of government, Ngerulmud is the center for public spending and national administration.
Ngerulmud
Ngerulmud has been the capital of Palau since 2006.
Ngchesar
Ngchesar is a quiet settlement on the east coast of Babeldaob.
Melekeok
Melekeok is a village on the east coast of Babeldaob.
Aimeliik
Aimeliik is a settlement in southwestern Babeldaob.
Ngiwal
Ngiwal is a village in eastern Babeldaob.
Ngardmau
Ngardmau is a settlement on the west coast of Babeldaob.
Angaur
Angaur is the main settlement on the island of the same name in southern Palau.
History & landmarks
German Channel
This artificial channel was created during the German colonial period to allow the transport of phosphate from the southern lagoons.
🗺️
Ngerukewid Cliffs
These steep limestone walls rise vertically from the turquoise water.
Rock Islands (Chelbacheb)
The Rock Islands are an archipelago of limestone formations in the ocean.
Nature
Ngerukewid Islands (70 Islands)
A strictly protected wildlife preserve within the Rock Islands.
Carp Island Reserve
A crescent-shaped island with rich coral gardens and mangroves.
Ngerumekaol Spawning Channel
A critical habitat for groupers during their spawning season.
Jellyfish Lake
An isolated marine lake on Eil Malk island.
Blue Corner
One of the world's most famous diving sites with immense fish density.
Ulong Island
Famous for its ancient rock paintings and rich flora.
Bloody Nose Ridge
This rugged limestone ridge on Peleliu was a strategic point during World War II.
Malakal Peak
This hill on Malakal Island overlooks the most important harbor in Palau.
More places
Rock Islands
The Rock Islands are a collection of over 200 limestone islands in Palau.
Eil Malk Island
Eil Malk is the largest island in the Mecherchar group of the Rock Islands.
Peleliu South Harbor
Peleliu South Harbor is the island's logistical hub.
Peleliu Island
Peleliu is a low-lying coral island in the southern Palau archipelago.
Peleliu Battlefield
This historic area preserves remains of the intense 1944 combat, including Japanese bunkers and American tanks.
Orange Beach
On this section of beach on Peleliu, the first US Marines landed on September 15, 1944, under heavy Japanese fire.
German Lighthouse
The German lighthouse on Peleliu was built during the German colonial period in the early 20th century.
Peleliu WWII Memorial
The memorial honors the fierce battles between the USA and Japan in 1944.