Advanced Open Water

Wrecks & Reefs

All Year Round

Palau

UD Rating – 4.5 Star

S/Y Palau Siren

Your Gateway to Palau's Underwater Wonders

The Palau Siren is a purpose-built, 40 m ironwood and teak Phinisi-style liveaboard, handcrafted by divers on Sulawesi and relaunched after a 2024 refit. With space for up to 16 guests in eight stylish cabins, she offers an intimate yet luxurious platform for Palau exploration. Each cabin features climate control, en-suite facilities, hot water, and high-end comforts. Guests can stretch out in the spacious saloon with a cocktail bar and entertainment area, dine outdoors under shade, and prepare dive and camera gear in the dedicated internal lounge—ideal for underwater photographers. On deck, two large fibreglass skiffs, a nitrox system, rinse tanks, and personal dive stations support effortless, camera-ready diving adventures

Built in 2012 and refitted in 2024, the Palau Siren measures 40 m in length, 9.7 m in beam, and is powered by twin engines and three generators; her ironwood hull provides timeless maritime charm . She accommodates a maximum of 16 divers served by a crew of 12, including three dive guides . Technical amenities include a nitrox compressor fresh water maker, laundry, massage facilities, and Wi-Fi . Safety systems include AED, emergency oxygen, life-rafts, smoke detection, and fire-fighting equipment. For dive support, she has dual rinse tanks (dry/combo for cameras), fresh water showers, and two shaded skiffs, each with full dive gear capacity. Entertainment and communal features include an air-conditioned saloon with flat-screen TV, bar, charging stations, a sundeck with loungers, camera/video prep station, outdoor dining area, and kayaks.

Premium Double

Palau Siren has two fixed double bed cabins located at the bow at the lower deck of the boat. The cabins have the following amenities:

  • Double bed
  • Air Conditioning
  • Private Bathroom
  • Storage
  • Extra towels

Premium Twin

Palau Siren has four fixed twin cabins and two flexible twins which can be converted to double beds. The Premium Twin cabins are located at the lower deck of the boat. The cabins have the following amenities:

  • Twin beds or Double bed
  • Air Conditioning
  • Private Bathroom
  • Storage
  • Extra towels

Route Options

Blue Corner consistently ranks among the world’s top dive sites and is renowned among scuba divers globally. Yet beyond this iconic location, Palau boasts a vast array of equally thrilling, world-class dive sites. The region is essentially a shallow turquoise lagoon encircled by dramatic drop-offs into the Pacific Ocean. Nutrient-rich currents flowing into these shallows create a vibrant marine environment where corals and schooling fish compete for space. Adding to the allure are the channels that feed into the lagoon, attracting numerous manta rays and reef sharks—a true paradise for scuba enthusiasts.

A liveaboard diving expedition through the Palau Islands offers a rich variety of experiences, from reef and drift dives to sunset and night explorations. As the entire nation is designated a shark sanctuary, divers are treated to regular sightings of reef sharks and manta rays. The underwater landscape also features stunning hard coral reefs, caves, caverns, a wreck, and the famous channel diving for which Palau is celebrated. While many sites are suitable for divers of all levels, some channels feature strong currents, making reef hooks an essential part of dive gear.

The diving itineraries focus on the Rock Islands Southern Lagoon, a UNESCO World Heritage Site, with an additional day spent exploring Peleliu. The islands' narrow channels and ever-changing tidal currents are best navigated using skiff tenders. All liveaboards operating in Palau, including the Palau Siren, are required to anchor in designated mooring areas around the Rock Islands. As such, movement of the main vessel within the lagoon is minimal, with dive groups typically dropped off and retrieved by skiffs. These transfers between the Palau Siren and the dive sites generally take between 5 to 15 minutes, depending on anchorage.

Embarking from Malakal Harbour, the Palau Siren cruises into the Rock Islands Southern Lagoon before proceeding to Peleliu. Dive site selection and sequence vary by trip and are tailored to current conditions, ensuring guests experience the best of Palau’s three premier dive regions: Ulong, Ngemelis, and Peleliu.

A typical day aboard offers up to four dives—three during the day and, where possible, a sunset or night dive. The daily schedule is designed to balance activity and relaxation:

Light breakfast followed by a briefing and Dive 1
Full breakfast, relaxation, briefing, and Dive 2
Lunch, relaxation, briefing, and Dive 3
Snack, relaxation, briefing, and Dive 4
Dinner

*On days when land excursions are offered, only three dives are conducted.

The 10-night Special New Moon Spawning liveaboard itinerary aboard the Palau Siren offers divers a truly extraordinary experience. This unique voyage is designed to coincide with one of nature’s most impressive underwater phenomena: the mass spawning aggregation of bumphead parrotfish (Bolbometopon muricatum) during the new moon lunar cycle. On these special departures, guests have the rare opportunity to witness thousands of these large reef fish congregating in a single area of Palau to reproduce—a breathtaking display of synchronized marine life behavior.

During this period, the Cruise Director provides a series of informative briefings and presentations, offering insights into the spawning event and what divers can expect to see. These dives, while thrilling, are recommended only for experienced divers due to the strong currents commonly found at these sites.

The majority of the diving takes place within the Rock Islands Southern Lagoon—a UNESCO World Heritage Site—with an additional day spent exploring the waters around Peleliu. Given the narrow channels and dynamic tidal flows of the area, skiff tenders are used to navigate between dive sites and the main vessel. Palau Siren, like all liveaboards in the region, is required to use designated mooring points scattered throughout the Rock Islands. As a result, cruising within the lagoon is minimal, with dive transfers typically lasting between 5 to 15 minutes depending on the anchorage location.

In addition to the spawning dives, certain itineraries include the option to participate in Blackwater diving—a surreal and adventurous experience that involves diving at night, often far from the reefs, to witness deep-sea creatures rising toward the surface to feed. These nocturnal dives offer a chance to observe rare and bioluminescent marine life in the open ocean.

Each day typically includes up to four dives: three daytime dives and either a sunrise, sunset, or night dive depending on the timing of the spawning activity. The daily schedule is structured as follows:

Light breakfast, followed by briefing and Dive 1
Full breakfast, relaxation, briefing, and Dive 2
Lunch, relaxation, briefing, and Dive 3
Snack, relaxation, briefing, and Dive 4 (where possible)
Dinner

*On days featuring land excursions, the number of dives may be limited to three.

The 7-night Full Moon Spawning itinerary aboard the Palau Siren delivers an unforgettable liveaboard diving experience, combining Palau’s breathtaking dive sites with a chance to witness one of the ocean’s most thrilling natural phenomena—the mass spawning of red snapper (Lutjanus bohar) during the full moon. During this lunar phase, thousands of red snappers gather in a high-energy spectacle, drawing in large oceanic predators that prey on the swirling, spawning fish. This powerful underwater event is rarely seen by divers, making it a highlight of the Palau diving calendar.

As the full moon period approaches, the Cruise Director offers a series of informative briefings to help divers understand the unique behaviors and conditions surrounding these special dives. Given the strong currents typically present at the spawning sites, these dives are recommended for experienced divers only.

Most diving during this itinerary takes place within the Rock Islands Southern Lagoon, a UNESCO World Heritage Site, with one day spent exploring the waters near Peleliu. The narrow channels and shifting tides make certain parts of the lagoon best navigated by skiff tenders. In line with national regulations, Palau Siren—along with all other liveaboards operating in the area—is required to use specific anchorage and mooring points, which limits movement within the lagoon. Dive teams are dropped off and picked up by skiffs, with transfers between the main vessel and dive sites generally taking between 5 to 15 minutes depending on anchorage.

Beyond the red snapper spawning event, some itineraries also offer the chance to try Blackwater diving—a truly unique night dive experience. Divers descend into open ocean in total darkness, far from the reef, to witness deep-sea creatures rising to the surface to feed—revealing a hidden world of bizarre and bioluminescent marine life.

Each day typically includes up to four dives: three daytime dives and one sunrise, sunset, or night dive, depending on the timing of the spawning activity. The daily diving schedule is as follows:

Light breakfast, followed by briefing and Dive 1
Full breakfast, relaxation period, briefing and Dive 2
Lunch, relaxation period, briefing and Dive 3
Snack, relaxation period, briefing and Dive 4 (where possible)
Dinner

*On days that include land excursions, the number of dives is limited to three.

Vessel Details

Year Built / Refurbished 2012 / 2024
Guest Numbers 16
Length & Width 40 meters x 9.7 meters
Displacement 176 tonnes
Fuel capacity 14 tonnes
Cruising speed 10 knots
Engines 1x Nissan RH-10 1x Mitsubishi 6D-22
Generators 2 x yanmar 65Kva 1 x Yanmar 37.5 Kva
Electrical Voltage/Hz: 220V / 50Hz
Power Outlet Types Universal + USB
Water Maker Type 2 x Reverse Osmosis units
Water Storage capacity 12 tonnes
Navigation & Safety Radar, Depth Sounder, GPS Tracking, Radio VHF/DSC/SSB, AIS-SART, EPIRB, Satellite phone/communication, First Aid Kits, Trauma Kit, Emergency Responders, Emergency Oxygen, AED, Life Jackets, Life Rafts (Qty & Capacity), Life Rings (Qty), Emergency Escape Hatch, Emergency lighting, Emergency flares, Smoke/fire detection systems, CO2 Fire Fighting Systems, Fire Fighting Equipment, Fire Extinguishers, Bilge Pump Alarm, Hull Breach Kits, Night Watch, CCTV, Other
Dive Tenders 2 x 150 HP outboards
Tenders capacity 18 pax
Nitrox 29-32%
Compressors 2 1x MCH 13, 1x MCH 16
Weights Available
Standard cylinders 11.1 liters (AL80) -Included
Large cylinders (limited qty) 13.2 Litres (A100) - extra cost
Full equipment set 180 USD/ 7 Nights 270 USD/ 10 Nights
BCD 72 USD/ 7 Nights 108 USD/ 10 Nights
Regulators 72 USD/ 7 Nights 108 USD/ 10 Nights
Mask 30 USD/ 7 Nights 45 USD/ 10 Nights
Fins 30 USD/ 7 Nights 45 USD/ 10 Nights
Boots 30 USD/ 7 Nights 45 USD/ 10 Nights
Wetsuit (Shorty 3mm) 60 USD/ 7 Nights 90 USD/ 10 Nights
Dive Computer 36 USD/ 7 Nights 54 USD/ 10 Nights
UW Torch / Flashlight 36 USD/ 7 Nights 54 USD/ 10 Nights
13 Liter (AL100) cylinder 30 USD/ 7 Nights 45 USD/ 10 Nights
Additional 11 Litre cylinder 42 USD/ 7 Nights 63 USD/ 10 Nights
Nitrox – 7 nights 100 USD
Nitrox – 10 nights 130 USD
Oxygen per liter (guests need to bring their own booster pump) 0.07 USD
Sofnolime – 20kg tub 300 USD

Available Experiences

ITINERARIES AVAILABLE IN THIS DESTINATION

Marcelina

Wednesday, 04 March 2015

Mr & Mrs Cartwright – Micronesia and Hawaii

Mr & Mrs Cartwright have just returned from an amazing itinerary in Micronesia and Hawaii and its looks like they had an amazing time based on the images gallery down bellow.

Mr & Mrs Cartwright – Micronesia and Hawaii

What Our Customers Have To Say

Reviews from our Clients, Journalists, Photo Pro's and our own Experts

Our reviews and blogs are an additional guide to evaluate of the holiday is exactley what you are looking for or not. Some love an Eco-Resort, some love air-con and a flat screen TV, we aim to ensure you get what you are looking for, at great value for money.

Siaes Tunnel

Palau, Micronesia

The Siaes Tunnel is another extraordinary dive site on Palau, this site is situated close to Ulong Channel on the west coast. Due to its depth, it is considered an advanced dive site and time inside is therefore limited around 12 minutes.

The opening to the tunnel starts on a sheer wall at 23m and stretches inside for 50m, with a height of 6m and a width of 16m. The inside is an enormous cavern ranging in depth from 30-40m. White tip sharks can often been seen resting at the bottom.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 40m

Ulong Channel

Palau, Micronesia

This site is situated on the west coast of Palau, close to Siaes Tunnel. The entrance is covered with coral gardens and the channel itself stretches some 500m - at an average width of 33m - to the lagoon. There is a sandy bottom at the entrance where shark gather together to feed on the fish that are swept inside.
The bottom varies in depth from between 10-15m and is clear of coral, but the sides are festooned with soft coral and sea fans. Divers will be able to see a vast array of plate coral that houses squirrelfish, glasseyes and soldier fish.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 15m

Blue Holes

Palau, Micronesia

The blue hole is a fascinating site. From the shallow reef, divers can enter from any of four openings and descend into an enormous underwater cavern. When the light is right, the feeling inside is of being in a submerged cathedral.

The bottom drops to 35m and divers will discover a good variety of sea fans and whip and cup corals. The fish life is also diverse and larger pelagics, including barracuda, tuna and jacks can be encountered along with grey and white tip reef sharks.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 35m

Blue Corner

Palau, Micronesia

The Blue Corner is one of the most famous dive sites around Palau and it’s also the one that everyone wants to visit. Depths and currents here can change in seconds, therefore at times this dive site will not make it suitable for beginners. Divers can expect to encounter plenty of white tip and grey reef sharks, barracuda, jacks, rays, tuna, snapper, wrasse and bass. A myriad of smaller reef fish inhabit the area as well.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 30m

Peleliu

Palau, Micronesia

This site is located near Anguar Island at the most southerly part of Palau. At its shallowest, this reef lies in 10m of water, with walls that drop off steeply to the depths. Because of the ever-present currents, there is actually very little coral life at the top; however the walls are covered in sea fans, sea whips and hard and soft corals. Fish life is profuse here and it is a great site to see grey reef sharks.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 45m

German Channel

Palau, Micronesia

This is a man-made channel that was blasted out by German miners, in the early 1900s. There is a sandy bottom at 17m that slopes away steeply to the depths. The bottom has some large coral formations. The biggest attraction here is the large number of manta rays divers are likely to see. Grey reef sharks are also often encountered, again taking advantage of the cleaning wrasse. Other attractions are barracuda, lionfish, snappers and triggerfish.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 17m

New Drop-off

Palau, Micronesia

This is a new dive site; the upper zone is loaded with large anemones and very colourful clownfish. Several schools of bluelined snapper cruise along the top of the wall and every now and then a school of yellow backed fuseliers sweep past the divers.

This wall is home to a pair of clown triggerfish that display a wild colour pattern. There is also a pair of rare blue face angelfish, one of the most elegant members of the angelfish family.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 39m

Big Drop-off

Palau, Micronesia

The Big Drop-off is also known as Ngemelis Wall, it got its name because the wall begins in a couple of feet of water (1m) and drops off to 2000 feet (600m). This site has some of the most beautiful soft corals and sea fans that Palau has to offer, as well as many small reef fish, including the unusual square spot anthias and thousands of pyramid butterfly fishes. There are also some turtles, beautiful anemones, clown fish, and the white tip reef sharks.

  • Dive Type: Boat Dive
  • Diver Level: Advanced Open Water Diver
  • Max Depth: 600m

Short Drop-Off

Palau, Micronesia

A sloping wall just outside the entrance to Koror Harbor that is covered with giant seafans. The top of the wall is a beautiful coral garden loaded with tropical fish and invertebrates.

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 18

Siaes Corner

Palau, Micronesia

West coast of Palau. Above Siaes Tunnel and Ulong Channel

  • Dive Type: Boat Dive
  • Diver Level: Open Water Diver
  • Max Depth: 30m
Dates Duration Route Room Type Price
24 Jul 2025
3 Aug 2025
10 Nights Palau Islands Premium Twin £2996
12 Aug 2025
22 Aug 2025
10 Nights Palau Islands Premium Twin £2568
23 Aug 2025
2 Sep 2025
10 Nights Palau Islands Premium Twin £2996
3 Sep 2025
10 Sep 2025
7 Nights Palau Islands Premium Twin £2430
13 Sep 2025
20 Sep 2025
7 Nights Palau Islands Premium Twin £2430
21 Sep 2025
28 Sep 2025
7 Nights Palau Islands Premium Twin £2778
20 Dec 2025
27 Dec 2025
7 Nights Palau Islands Premium Twin £2778
4 Mar 2026
11 Mar 2026
7 Nights Palau Islands Premium Twin £3472
12 Mar 2026
22 Mar 2026
10 Nights New Moon Spawning (10 nights) Premium Twin £4160
17 Aug 2026
27 Aug 2026
10 Nights Palau Islands Premium Twin £3424
5 Sep 2026
15 Sep 2026
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
16 Sep 2026
26 Sep 2026
10 Nights Palau Islands Premium Twin £4960
13 Oct 2026
23 Oct 2026
10 Nights Palau Islands Premium Twin £4960
11 Nov 2026
18 Nov 2026
7 Nights Palau Islands Premium Twin £3472
8 Dec 2026
18 Dec 2026
10 Nights Palau Islands Premium Twin £4960
7 Jan 2027
14 Jan 2027
7 Nights Palau Islands Premium Twin £3472
15 Jan 2027
25 Jan 2027
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152
29 Jan 2027
8 Feb 2027
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
30 Mar 2027
9 Apr 2027
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
13 May 2027
23 May 2027
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152
20 Jun 2027
30 Jun 2027
10 Nights Palau Islands Premium Twin £4280
17 Jul 2027
24 Jul 2027
7 Nights Palau Islands Premium Twin £2996
5 Aug 2027
15 Aug 2027
10 Nights Palau Islands Premium Twin £4280
16 Aug 2027
23 Aug 2027
7 Nights Palau Islands Premium Twin £2996
24 Aug 2027
3 Sep 2027
10 Nights New Moon Spawning (10 nights) Premium Twin £4472
4 Sep 2027
14 Sep 2027
10 Nights Palau Islands Premium Twin £4960
15 Sep 2027
22 Sep 2027
7 Nights Palau Islands Premium Twin £3472
4 Oct 2027
14 Oct 2027
10 Nights Palau Islands Premium Twin £4960
19 Oct 2027
29 Oct 2027
10 Nights Palau Islands Premium Twin £4960
18 Nov 2027
25 Nov 2027
7 Nights Palau Islands Premium Twin £3472
26 Nov 2027
6 Dec 2027
10 Nights Palau Islands Premium Twin £4960
18 Dec 2027
28 Dec 2027
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
29 Dec 2027
5 Jan 2028
7 Nights Palau Islands Premium Twin £3472
17 Jan 2028
27 Jan 2028
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
14 Feb 2028
21 Feb 2028
7 Nights Palau Islands Premium Twin £3472
22 Feb 2028
3 Mar 2028
10 Nights Palau Islands Premium Twin £4960
4 Mar 2028
14 Mar 2028
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152
26 Mar 2028
2 Apr 2028
7 Nights Palau Islands Premium Twin £3472
3 Apr 2028
13 Apr 2028
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152
1 May 2028
11 May 2028
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152
12 May 2028
19 May 2028
7 Nights Palau Islands Premium Twin £3472
20 May 2028
27 May 2028
7 Nights Palau Islands Premium Twin £3472
28 May 2028
4 Jun 2028
7 Nights Palau Islands Premium Twin £3472
29 Jul 2028
5 Aug 2028
7 Nights Palau Islands Premium Twin £2996
6 Aug 2028
13 Aug 2028
7 Nights Palau Islands Premium Twin £2996
14 Aug 2028
24 Aug 2028
10 Nights New Moon Spawning (10 nights) Premium Twin £4472
25 Aug 2028
1 Sep 2028
7 Nights Palau Islands Premium Twin £2996
2 Sep 2028
12 Sep 2028
10 Nights Palau Islands Premium Twin £4960
13 Sep 2028
20 Sep 2028
7 Nights New Moon Spawning (10 nights) Premium Twin £3664
21 Sep 2028
28 Sep 2028
7 Nights Palau Islands Premium Twin £3472
29 Sep 2028
9 Oct 2028
10 Nights Palau Islands Premium Twin £4960
16 Oct 2028
23 Oct 2028
7 Nights Palau Islands Premium Twin £3472
24 Oct 2028
3 Nov 2028
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152
4 Nov 2028
14 Nov 2028
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
15 Nov 2028
22 Nov 2028
7 Nights Palau Islands Premium Twin £3472
4 Dec 2028
14 Dec 2028
10 Nights New Moon Spawning (10 nights) Premium Twin £5152
15 Dec 2028
22 Dec 2028
7 Nights Palau Islands Premium Twin £3472
23 Dec 2028
2 Jan 2029
10 Nights Full Moon Spawning (7 nights) Premium Twin £5152