— Travel guide ROR
Koror Rock Islands
Photo · Wikipedia →

Koror

Palau · world-class diving · Rock Islands · Micronesian culture · conservation-forward · remote
When to go
November – May (calmer seas, best visibility)
How long
5 – 7 nights
Budget / day
$180–$900
From
$3,200
Plan my Koror trip →

Free · no card needed

Koror is the dive capital of Micronesia — the Rock Islands UNESCO World Heritage Site, seventy marine lakes, and some of the Pacific's most biodiverse coral reefs are all accessible from this small island city.

The case for Palau is made underwater. The waters surrounding the archipelago's 340 islands hold a marine biodiversity so concentrated that Jacques Cousteau once described this area as the best diving in the world. That assessment is debated by divers who have seen Cocos, Tubbataha, and the Coral Triangle, but Palau's specific combination — the Blue Corner current dive, the diversity of Ngemelis Wall, the German Channel manta ray cleaning station, the Helmet Wreck from WWII, all within a day's boat range of Koror — represents a genuinely elite diving destination that still functions at that level today.

The Rock Islands — Chelbacheb — are the visual symbol of the territory: hundreds of forest-topped limestone mushroom islands rising from turquoise water, their bases undercut by wave action into the distinctive narrow-waisted silhouettes that define Palau's postcard. The Rock Islands Southern Lagoon was inscribed as a UNESCO World Heritage Site in 2012, recognized both for its exceptional natural values and for the Palauan conservation management practices that have protected it.

Jellyfish Lake is the most famous single attraction: a marine lake isolated from the open ocean, in which golden jellyfish evolved without predators, losing their sting. The lake was dramatically affected by a coral bleaching event and El Niño warm water in 2016 that killed 99% of the jellyfish population. The population has largely recovered since 2019 and the lake was reopened to visitors in late 2019, though periodic closures occur for monitoring and recovery periods. Confirm current access status before building an itinerary around it.

Koror itself is a functional small city — the commercial centre of Palau, home to most of the country's 18,000 residents, and the access point for all offshore diving and island excursions. It does not have a spectacular city-life scene. The dive operators, the downtown Malakal Harbour area, and the Belau National Museum are the main on-land points of interest. The logic of a Palau trip is: base in Koror, spend the days on the water, eat dinner at the small but decent restaurant strip in Koror town.

The practical bits.

Best time
November – May
The weather in Palau is tropical year-round, but November through May (the drier season) generally offers calmer seas and better diving conditions. The manta ray aggregation at German Channel is most reliable November through April. June through October brings heavier rains, rougher conditions, and slightly lower visibility — still diveable but less predictable. Water temperature is warm year-round (27–30°C), eliminating wetsuit concerns.
How long
7 nights recommended
Five nights is the minimum to do the signature dives justice — you need days for Blue Corner, Ngemelis Wall, German Channel, and one topside excursion. Seven nights adds the Rock Islands kayak, Jellyfish Lake (if open), and a Peleliu battlefield day. Liveaboard options extend the range to outer atolls.
Budget
$380 / day typical
Palau is expensive. Accommodation in Koror runs $120–200/night for mid-range guesthouses and $250–500/night for better hotel options. Diving is the significant cost: a two-tank boat dive runs $140–180 USD including park fee. The Rock Islands Visitors Permit is $100 USD (valid 10 days). Food is expensive with limited local options — plan $60–100/day for meals.
Getting around
Dive boat and kayak
Koror is a small connected cluster of islands accessible on foot within the city. All offshore excursions go by boat — dive operators run daily departures at 7–8 AM from Malakal Harbour. Rental cars ($60–80/day) are available for land-based exploration of Babeldaob (the main island connected by causeway). The Rock Islands are boat-only; no motorised craft in the Rock Islands marine lake area.
Currency
US Dollar (USD) · used universally
USD is the official currency and universally accepted. Cards widely accepted at hotels and dive operators. Carry cash for local restaurants, the Koror morning market, and tipping. No currency conversion required for US travelers.
Language
Palauan and English are both official languages. English is used for all tourism, government, and business interactions. Palauan is spoken in communities and homes — a few words ('alii' = hello, 'meral mo er ngii' = you're welcome) are warmly received.
Visa
Visa-free for US, EU, Australian, Japanese, South Korean, and most Western passport holders for up to 30 days. Check current requirements at Palau Immigration. No e-visa system; standard on-arrival entry.
Safety
Very safe. One of the lowest crime rates in the Pacific. The primary safety concerns are ocean-related: the Blue Corner current dive is technical and requires dive guide management; Jellyfish Lake's altitude and depth require following marine park rules precisely. WWII unexploded ordnance exists on land on some outer islands — stay on marked trails.
Plug
Type A / B · 120V — same as the United States. No adapter needed for US-spec devices; European and Australian travelers need adapters.
Timezone
PWT · UTC+9 (no daylight saving)

A few specific picks.

Hand-picked, not algorithmic. Each of these has earned its space.

activity
Blue Corner Dive Site
Ngemelis Island

Palau's most famous dive — an oceanic wall where divers hook in against the current and watch schooling barracuda, grey reef sharks, turtles, and Napoleon wrasse pass in the upwelling. Requires a reef hook and intermediate diving experience. The most exhilarating dive in Micronesia.

activity
Rock Islands Southern Lagoon
Chelbacheb

The UNESCO World Heritage core zone — 445 limestone mushroom islands rising from turquoise water. Best explored by boat or kayak. The visual of the undercut limestone bases and dark jungle tops reflected in flat-calm morning water is Palau's defining image.

activity
Jellyfish Lake (Ongeim'l Tketau)
Eil Malk Island

A marine lake with millions of non-stinging golden jellyfish (Mastigias papua etpisoni). The population largely recovered since the 2016 bleaching event. Confirm access status before visiting — periodic closures occur. Snorkelling only; scuba prohibited to protect the chemocline. One of the most singular natural experiences in the Pacific.

activity
German Channel Manta Dive
Peleliu Passage

A cleaning station in a wide channel where manta rays arrive to be cleaned by wrasse — typical encounters involve 3–8 mantas in a single dive. Most reliable November through April. An intermediate dive, manageable in mild current.

activity
Ngemelis Wall (Big Drop-Off)
Ngemelis Island

A sheer coral wall dropping from 3m to beyond 300m — considered one of the world's great wall dives. Visibility often exceeds 30 metres. Soft corals at every depth, hawksbill turtles navigating the wall face.

activity
Kayaking the Rock Islands
Chelbacheb

Guided kayak tours through the Rock Islands' maze of channels and coves, stopping at snorkel sites, hidden beaches, and the 'Milky Way' shallow lagoon where white limestone mud is used as a natural face treatment. Full-day or multi-day tours available.

activity
Peleliu Battlefield
Peleliu Island

One of the Pacific War's most brutal battles (September–November 1944) took place on Peleliu Island. Rusting tanks, gun emplacements, and preserved aircraft remain in the jungle. Accessible by boat from Koror (45 min). The combination of WWII history and excellent nearby diving makes it a compelling day or overnight extension.

activity
Belau National Museum
Koror

The best introduction to Palauan history, traditional bai (men's meeting house) architecture, and the complex layering of Spanish, German, Japanese, and American colonial periods. Small but well-curated; essential context before heading offshore.

activity
Milky Way Lagoon
Rock Islands

A shallow lagoon with a bottom of fine white limestone sediment — the water takes on a milky pale turquoise. Traditionally the limestone mud is used as a skin treatment. Most Rock Islands kayak tours include a stop.

activity
Helmet Wreck (Amatsu Maru)
Koror lagoon

A WWII Japanese supply ship lying at 35 metres in the Koror lagoon, covered in coral growth and resident with schools of batfish and glassfish. One of several accessible WWII wrecks in Palau's waters.

Pick a neighborhood, not a hotel.

Koror is a city of neighborhoods. The one you stay in shapes the trip more than the property does.

01
Koror Town / Malakal
Commercial centre, dive operator hub, restaurants, the harbour
Best for All visitors — this is the base for everything in Palau
02
Malakal Harbour
Dive boats, speedboats, the departure point for all offshore excursions
Best for Divers and snorkellers — proximity to boat departures is the main accommodation criterion
03
Babeldaob Island
Palau's main (and largely undeveloped) island — jungle, rivers, the new capital Ngerulmud
Best for Land-based exploration, waterfall hikes, traditional bai villages, the new capitol building
04
Rock Islands / Chelbacheb
UNESCO-listed mushroom island archipelago — no permanent habitation, boat-only access
Best for Diving, snorkelling, kayaking — the core natural experience of Palau
05
Peleliu Island
WWII battlefield, dive sites, small local community, jungle-covered historical sites
Best for History-focused travelers, divers wanting less-trafficked sites

Different trips for different travelers.

Same city, very different stays. Pick the lens that matches your trip.

Koror for serious divers

Palau is on every serious diver's list. Plan 7 nights minimum to cover the signature sites — Blue Corner, German Channel, Ngemelis Wall, Chandelier Cave, and the WWII wrecks. AOWD certification is the realistic minimum; experience in current diving is strongly recommended.

Koror for liveaboard divers

Several world-class liveaboards operate from Koror — the Palau Siren, Ocean Hunter, and others. Liveaboards reach the outer atolls (Angaur, Tobi, Helen Reef) and dive sites not accessible on day trips. The pinnacle of the Palau diving experience for those who want the full range.

Koror for marine conservationists

Palau is a global model for ocean conservation — the Palau Pledge, the reef-safe sunscreen ban, the world's first shark sanctuary, and the marine protected areas framework make it a genuinely important destination for anyone engaged in conservation work or travel.

Koror for history enthusiasts

The Peleliu battlefield, the WWII wrecks, the Spanish and German colonial layers documented at the Belau National Museum, and the Japanese period infrastructure still visible around Koror make Palau an underrated Pacific War history destination.

Koror for couples with a diver and non-diver

The combination works well: the diver does two-tank days while the non-diver snorkels the Rock Islands, visits Babeldaob, and explores Koror. Share Jellyfish Lake (snorkelling), the kayak day, and Peleliu. The liveaboard option works less well for non-divers in a week.

Koror for nature and photography travelers

The Rock Islands at low tide in morning light, the underwater density of Blue Corner, the Jellyfish Lake golden mass, and the WWII relics emerging from jungle are iconic subjects. Underwater photography requires a camera system and housing; the Rock Islands kayak works well for above-water landscape work.

When to go to Koror.

A quick year at a glance. Great, good, or skip — see what each month is doing before you book.

Jan ★★★
27–30°C / 81–86°F
Drier season, manta rays active

Good diving conditions. German Channel mantas most reliable. Calm seas.

Feb ★★★
27–30°C / 81–86°F
Dry season continues, excellent visibility

One of the best diving months — calm seas, clear water, manta aggregations.

Mar ★★★
27–30°C / 81–86°F
Dry season, still excellent

Good diving conditions extending. Manta season winding down late month.

Apr ★★★
27–31°C / 81–88°F
Transitional, conditions generally good

Rain increasing but diving still excellent. Tail end of manta season.

May ★★
27–31°C / 81–88°F
Wet season beginning, rain building

Rain increasing. Still good diving. Visibility slightly lower than peak.

Jun ★★
27–31°C / 81–88°F
Wet season, heavier rain

Rainier and rougher. Diving still possible; fewer ideal conditions.

Jul ★★
27–30°C / 81–86°F
Wet season mid, variable

Rain and rough seas more frequent. Diveable but not optimal.

Aug ★★
27–30°C / 81–86°F
Wet season continues, occasional rough days

Variable. Some excellent days, some rough. Operator-dependent.

Sep ★★
27–30°C / 81–86°F
Wet season easing, transitional

Conditions improving as dry season approaches.

Oct ★★
27–30°C / 81–86°F
Dry season building, improving

Good shoulder month. Conditions improving, lower prices.

Nov ★★★
27–30°C / 81–86°F
Dry season arriving, manta season begins

Excellent conditions resuming. German Channel manta activity picking up.

Dec ★★★
27–30°C / 81–86°F
Dry season, excellent diving year-end

Very good conditions. End-of-year holiday demand increases. Book ahead.

Day trips from Koror.

When you want a change of pace. Each one's a half-day or full-day out, easy from Koror.

Blue Corner Dive

45 min boat from Koror
Best for The most famous dive in Palau — pelagic sharks, barracuda, strong current

Two-tank dive typically paired with Ngemelis Wall or other Ngemelis sites. Departs 7–8 AM with all major operators. AOWD certification with current experience required.

Jellyfish Lake

45 min boat to Eil Malk, then 10-minute trail
Best for Snorkelling among non-stinging golden jellyfish

Confirm access status before planning. Included in the Rock Islands permit. Mineral sunscreen only; no scuba. The most unique experience Palau offers non-divers.

Rock Islands Full-Day Kayak

Full day from Koror harbour
Best for UNESCO Rock Islands, Milky Way, hidden beaches, snorkel stops

Guided full-day tours available through multiple operators. Combines kayaking with snorkel stops at the Coral Garden, Clam City, and the Milky Way lagoon. The best topside day in Palau.

Peleliu Battlefield

45 min boat south from Koror
Best for WWII Pacific battle site, jungle relics, adjacent coral reefs

Day trip by speedboat from Koror. Guided battlefield walk through the jungle — tanks, aircraft, and fortifications still in place. Combine with a dive at Peleliu's excellent reef sites for a full day.

Babeldaob Island Road Trip

30 min drive from Koror causeway
Best for Waterfall hikes, traditional bai villages, the new Ngerulmud capitol

Rent a car and drive the ring road of Babeldaob — the Ngardmau waterfall hike, Airai village bai, Ngerulmud capitol, and the north coast jungle. A full day of land-based exploration rarely attempted by divers.

German Channel Manta Dive

1 hour boat from Koror
Best for Manta ray cleaning station, November–April peak

Typically the afternoon dive on a two-tank day. Most operators combine it with a Blue Corner morning dive for an efficient day.

Koror vs elsewhere.

Quick honest reads on the cities people compare Koror to.

Koror vs Maldives

The Maldives has better overwater bungalow luxury and more accessible resorts from Europe. Palau has more diverse marine life, better wall and current diving, and WWII history. Both have world-class diving. Palau is significantly more remote.

Pick Koror if: You want the most biodiverse and technically challenging Pacific diving experience rather than a luxury resort island stay.

Koror vs Vanuatu

Vanuatu has the active volcano, kastom culture, and Espiritu Santo wreck diving. Palau has superior reef and pelagic diving across the board. Both are remote Pacific destinations; Palau is harder to reach and more expensive.

Pick Koror if: You want world-class diving over everything else and are willing to accept the logistical complexity of reaching Palau.

Koror vs Fiji (Nadi)

Fiji is more accessible, cheaper, and has a broader range of activities and accommodation. Palau's diving is superior in specificity and fame. Fiji is better for first-time Pacific travelers; Palau is better for dedicated divers.

Pick Koror if: You are specifically coming to dive at the level of Blue Corner and the German Channel mantas.

Koror vs Philippines (Tubbataha)

Tubbataha Reef in the Philippines is comparable for pelagic diving and is less expensive. Palau is more accessible year-round. Tubbataha requires a liveaboard; Palau's signature sites are accessible on day boats. Both belong in any serious diver's top-ten list.

Pick Koror if: You want the most accessible version of world-class Pacific pelagic diving on day boats.

Itineraries you can start from.

Real plans built by Roamee. Use one as your starting point and change anything.

Things people ask about Koror.

Is Palau the best diving in the world?

Jacques Cousteau made that claim in the 1970s and it has echoed in dive culture since. Palau consistently ranks in the top five worldwide for the combination of large pelagic species, wall diving, coral diversity, and WWII wrecks. The Blue Corner is one of the most famous single dive sites on Earth. Whether it surpasses Raja Ampat, Cocos Island, or the Red Sea is a debate without a consensus answer — but Palau absolutely belongs in the global elite.

Is Jellyfish Lake open?

Jellyfish Lake reopened in late 2019 after the population largely recovered from the 2016 El Niño event that killed approximately 99% of the jellyfish. Access status changes periodically based on population monitoring. Check with your dive operator or the Palau Visitors Authority before building an itinerary around it. When open, it operates strict no-scuba and sunscreen prohibition rules.

Do I need to be an advanced diver for Palau?

The Blue Corner and several of the open ocean sites require at minimum an Advanced Open Water certification and experience in current diving. A reef hook is mandatory at Blue Corner; many operators require AOWD + logged dives before allowing clients at these sites. Other sites — Jellyfish Lake (snorkelling only), Ngemelis Wall's shallower sections, the Chandelier Cave — are accessible to less experienced divers. Non-divers can snorkel the Rock Islands and Jellyfish Lake.

What is the Rock Islands permit?

The Rock Islands (Chelbacheb) Visitors Permit costs $100 USD and is valid for 10 consecutive days. It covers all access within the Rock Islands Southern Lagoon, including Jellyfish Lake (when open), all snorkel sites, and anchoring in the lagoon. Your dive operator or tour company will typically handle the permit purchase. There is also a separate national marine sanctuary diving fee collected by operators.

When is the best time to see manta rays in Palau?

The German Channel manta cleaning station is most reliably active from November through April — the northeast monsoon season brings plankton-rich water that attracts mantas to the cleaning stations. Encounters in other months are possible but less predictable. The Ulong Channel and several sites around the outer islands also have manta populations that are less seasonally restricted.

What currency does Palau use?

The US Dollar is Palau's official currency — no conversion required for American travelers. Cards are accepted at hotels and dive operators in Koror. Carry USD cash for local markets, smaller restaurants, tips, and any village-based activities on Babeldaob. ATMs are available in Koror but supply can be limited; bring sufficient cash from home or your last major airport.

How do I get to Palau?

Palau International Airport (ROR) receives direct flights from a limited number of hubs. United Airlines operates from Guam, which connects to Tokyo Narita, Honolulu, and US West Coast cities. Cebu Pacific and other Asian carriers fly from Manila. Korean Air flies from Seoul. There are no direct flights from Australia, Europe, or most Pacific islands. Most travelers connect through Manila, Seoul, Guam, or Tokyo. Plan for 24–36 hours total travel from Europe or the US East Coast.

Is Palau safe?

Very safe. Palau has almost no violent crime. The primary safety risks are ocean-based: Blue Corner current diving requires professional guidance and reef hook technique; Jellyfish Lake snorkelling has strict rules about depth and sunscreen for environmental protection. WWII-era unexploded ordnance exists on some outer islands and on Peleliu — stay on marked trails. Jellyfish: the golden jellyfish in the lake have no functional sting for humans; ocean species outside the lake do.

What is the best non-diving activity in Palau?

The Rock Islands kayak tour is the best topside experience — paddling through the limestone mushroom islands, stopping at snorkel sites, the Milky Way lagoon, and hidden white-sand beaches. The Peleliu battlefield visit is the most historically significant day trip. Babeldaob Island has jungle waterfalls, the new national capitol (Ngerulmud), and traditional bai (men's meeting house) villages accessible by rental car.

What is a bai in Palauan culture?

A bai is a traditional Palauan men's meeting house — an elevated, intricately decorated wooden structure where village elders and the chiefs' council (rubak) meet to govern local affairs. The carved and painted storyboards on the exterior and interior of a traditional bai record village history and moral teachings through narrative pictures. The finest existing bai is at Airai village on Babeldaob; the Belau National Museum in Koror has a reconstructed example and explanatory exhibits.

What is the Chandelier Cave?

The Chandelier Cave is a shallow dive site in Koror harbour featuring a series of connected air chambers accessible by diving up through an underwater passage. The chambers have stalactites and stalagmites and provide a surreal above-waterline environment inside a coral cave system. It is accessible to Open Water certified divers and is unique within Palau's dive portfolio as a cave experience rather than a pelagic or wall dive.

Can non-divers enjoy Palau?

Yes, though the experience is weighted differently. Snorkelling in the Rock Islands, Jellyfish Lake (when open, snorkel only), and the lagoon reefs accessible from shore provides excellent marine life access. The Rock Islands kayak tour is entirely above water. The Peleliu battlefield is a land-based half-day. Babeldaob island touring by rental car is accessible to everyone. The overall destination is diver-optimised, but a non-diver accompanying a diving partner can find a week well occupied.

How is the food in Koror?

Limited but adequate. The Koror morning market has fresh local produce and prepared foods. A handful of restaurants — mostly in the Malakal area and along the main road — serve Filipino, Japanese, Palauan, and American food. Palauan traditional food (taro, mangrove crab, giant clam) is available at local restaurants but rarely featured prominently. Eating costs are high given the island's import dependence. Budget $40–70 USD/day for restaurant meals.

What is the best dive operator in Palau?

Fish 'n Fins is Palau's oldest and most internationally recognized dive operator, credited with establishing Blue Corner dive practices and contributing significantly to marine conservation. Sam's Tours and Palau Diving Center are also well-established operators with strong environmental records. All major operators hold PADI or SSI affiliation. The Palau Marine Sanctuary means all operators must follow strict conservation protocols. Choose based on your accommodation proximity to their dock and their schedule for your priority sites.

What is the Palau Pledge?

The Palau Pledge is a commitment required of all visitors entering Palau since 2017. Stamped in every visitor's passport at the border, it asks visitors to act in an environmentally responsible manner — not to remove coral, fish, or shells; not to use prohibited sunscreens; not to damage cultural sites. It is not legally enforceable as a contract but signals Palau's leadership in conservation tourism policy. Palau was the first country to ban oxybenzone and octinoxate-based (reef-damaging) sunscreens.

What WWII history is there in Palau?

Palau was intensively fought over in the Pacific War. The Battle of Peleliu (September–November 1944) was one of the Pacific campaign's costliest engagements. Tanks, artillery, aircraft, and personal equipment remain in the Peleliu jungle and on beaches. Multiple Japanese wrecks lie in Palau's waters, most accessibly the Helmet Wreck (Amatsu Maru) in the Koror lagoon. The Belau National Museum contextualises the Spanish, German, Japanese, and American colonial periods through artefacts and oral histories.

Is Palau expensive?

Yes. Palau is one of the more expensive Pacific destinations due to its remote location, import dependence, and niche tourism market focused on diving. Dive packages with accommodation run $350–600 USD/person/day all-in at mid-range. Budget travelers in guesthouses and eating locally manage $180–220 USD/day. The Rock Islands permit ($100), dive fees ($140–180/day), and the cost of flights to reach Palau all add up. Budget accordingly from the outset.

Your Koror trip,
before you fill out a form.

Tell Roamee your vibe — get a real plan, swap whatever doesn't feel like you.

Free · no card needed