REEF members and enthusiastic fish surveyors will not want to miss our first-ever Field Survey Trip to Micronesia, alongside REEF's Director of Science, Christy Pattengill-Semmens! This exciting 12-day adventure begins land-based at the world-renowned Manta Ray Bay Resort in Yap, featuring three days of diving Yap's rich coral walls, channels, and lagoon sites, all while observing creatures including manta rays, reef sharks, and maybe even mating mandarinfish. After diving Yap, recharge with a night at the Palau Royal Resort, within walking distance of the yacht marina. Then the excursion continues with a 7-night charter aboard the Palau Aggressor II, with the opportunity for up to 5 dives per day in warm, tropical water. Surveyors can look forward to discovering Napoleon wrasses, titan triggerfish, crocodile fish, and many different species of gobies tucked among an abundance of hard and soft corals. Participants will also have the unique chance to snorkel Palau's Jellyfish Lake and then dive the Chandelier Caves. Sign up now to reserve your space on this exhilarating exploration of Micronesia!


Cost per Person: $4,623 per diver *Palau liveaboard only package, without 4-night land-based Yap itinerary or overnight at Palau Royal Resort, also available for $3,335.

What is included: Your package includes 4 nights double occupancy accommodation in a standard room at Manta Ray Bay Resort in Yap, 3 days of 3-tank boat dives with Nitrox in Yap, government room taxes, round-trip airport transfers in Yap, morning wake-up call with coffee and tea, daily breakfast, lunch served on boat between dives, late check-out on last day of resort stay, Wi-Fi, tanks and weights, one night of double occupancy accommodation at Palau Royal Resort on Oct. 8 prior to boarding the Aggressor, 7 nights onboard the Palau Aggressor II liveaboard (double occupancy in a deluxe cabin), up to 5 dives per day including night dives, special trip to Jellyfish Lake on the last day of the charter, all meals and snacks (excluding dinner on the evening of Oct. 16), non-alcoholic beverages, local beer and wine, tanks, and weight, day room at Palau Royal Resort after disembarking yacht on Oct. 16.

Additional fees: A REEF Program Fee of $350 per diver will be added to each package to cover the cost of the group leader, seminar, and survey materials. Paid on premises: Optional shore diving available for $10/tank at Manta Ray Bay Resort. Port tax $210 per person paid onboard in Palau, park fees $55 per person. Taxes and fees subject to change. Crew gratuity at participant’s discretion. Airline departure tax in Palau (subject to change) approximately $55. Optional unlimited Nitrox available for $100 on board Aggressor. Package price does not include gratuities, dive gear and photo/video equipment rentals, or sundry personal purchases made from the ship’s onboard mini-boutique. Price does not include any other in-transit lodging other than overnight Oct. 8 and day room Oct. 16.

Airport/hotel transfer information and itinerary:

Monday, Oct 3: Depart from US cities, fly to Palau (ROR) or Guam (GUM)

Tuesday, Oct. 4: Participants will fly on to Yap International Airport (YAP). From there, the group will be transported to Manta Ray Bay Resort. Transportation to and from the airport in Yap is included in the package price.

Wednesday, Oct. 5 - Friday, Oct. 7: Three days of three-tank diving at Manta Ray Bay.

Saturday, Oct. 8: Late check-out at Manta Ray Bay Resort. Participants will be transported from the resort to the airport for an evening flight to Roman Tmetuchl International Airport (ROR) in Palau. After arriving in Palau, participants will spend the night at Palau Royal Resort, within walking distance of the Palau Aggressor marina. Please note ground transportation to and from the Palau airport will be pre-arranged in advance, as there are no taxis at the airport in Palau.

Sunday, Oct. 9Guests board the Palau Aggressor at 4pm.

Sunday, Oct. 16: Participants disembark the yacht at 8am. Because most flights leave Palau after midnight, day rooms at the Palau Royal Resort for Sunday are included in the package price.

How to book: To reserve your space or find out more, e-mail us at, or call us at 305-588-5869. A $1,000 deposit will be collected at the time of booking. Visit our Trip Policies page for more information on deposit and payment schedules.

About the trip leader: Dr. Christy Pattengill-Semmens is REEF's Director of Science. Christy is an expert at Fish ID and has led dozens of REEF Field Surveys over the years to all of REEF's survey project regions. This will be Christy's second REEF trip to the Central Indo-Pacific.

A magnificent fire dartfish, one of many great fish finds in Micronesia. Photo credit: Manta Ray Bay Resort

 Colorful, comfortable rooms at Manta Ray Bay.

The Palau Aggressor.

Get up close with Napoleon wrasse while diving the reefs of Palau. Photo credit: Palau Aggressor

Spend a week diving the tropical islands of Palau! Photo credit: Palau Aggressor