Gilman Wall - Yap
Site Overview
Gilman Wall is one of the most celebrated dive sites in Yap, a steep vertical drop-off covered in gorgonians and sea fans, with grey reef sharks, turtles, schooling barracuda, tuna and the occasional hammerhead. The site is defined by a steep vertical wall beginning around 12 m and plunging beyond 40 m, its face covered in gorgonians and sea fans and opening onto blue water, creating an underwater landscape that rewards divers with every visit. Grey reef sharks, turtles, schooling barracuda and tuna cruise the wall, with gorgonians and the occasional hammerhead adding to the pelagic show. Water clarity in this part of the Federated States of Micronesia is frequently excellent, with visibility often extending well beyond 15 metres and a comfortably warm tropical temperature year-round. The combination of healthy hard and soft corals, nutrient-rich currents and sheltered reef systems makes Gilman Wall a reliable location for both macro photography and wide-angle encounters. Local dive operators run regular trips to the site from nearby bases, and the geography means conditions are suitable across a range of experience levels with appropriate guidance. Conservation is taken seriously throughout Micronesia, and Gilman Wall benefits from marine protection that keeps fish stocks high and coral coverage dense. Divers who plan their visit around the calm season will find the most predictable conditions, though the site can be enjoyed throughout the year. Gilman Wall deserves a place on any serious Pacific diving itinerary, offering a genuine taste of the untouched beauty that makes Micronesia diving so highly regarded internationally. Regular visitors note that the marine life here, including grey reef shark, turtle, schooling barracuda, tuna, gorgonian sea fan, hammerhead shark, makes every descent memorable.
Dive Briefing
"The dive at Gilman Wall begins with a controlled entry and a short transfer from the nearest base, with the guide giving a full briefing on the site layout, expected marine life and emergency procedures. Descending toward a steep vertical wall beginning around 12 m and plunging beyond 40 m, its face covered in gorgonians and sea fans and opening onto blue water, divers are immediately surrounded by grey reef shark, turtle, schooling barracuda, tuna, with the reef revealing more detail the closer you look. The maximum depth reaches about 40 metres, while the average depth sits near 25 metres, so gas planning and a dive computer keep the profile safe and comfortable. Currents are described as moderate, and the guide chooses the entry time to make the most of slack or mild flow, using a reef hook or DSMB when needed. The topography offers natural swim-throughs and ledges that shelter larger animals, and the open water above the reef often holds cruising pelagics. Throughout the dive, neutral buoyancy protects the fragile coral, and the group stays close to the guide to manage depth and any surge. The safety stop is completed in open water on a DSMB, and the boat follows the bubbles to collect divers at the exit point for a relaxed return to base. A morning dive with light current gives the best view into the blue and the calmest wall positioning."
Signature Marine Life
grey reef shark
Carcharhinus amblyrhynchos
Best: January, February, March
turtle
Chelonia mydas
Best: January, February, March
schooling barracuda
Sphyraena barracuda
Best: January, February, March
tuna
Thunnus sp.
Best: January, February, March
gorgonian sea fan
Gorgonia sp.
Best: January, February, March
hammerhead shark
Sphyrna lewini
Best: January, February, March
Safety & Hazards
- Vertical wall and depth
- Current on the face
- Depth to 40 m
- Boat traffic above
- Surge on the wall
- Narcosis risk
Traveler Notes
Who is this for?
Gilman Wall is designed for advanced divers who want a memorable Yap experience shaped by a steep vertical wall beginning around 12 m and plunging beyond 40 m, its face covered in gorgonians and sea fans and opening onto blue water. The site requires Advanced Open Water certification, and the key considerations are vertical wall drop-off and current on the wall, so good buoyancy and planning are important. Wide-angle photographers will enjoy the reef scale and passing pelagics, while macro enthusiasts find plenty of small life among the coral and structure. It is a rewarding choice for travellers who appreciate healthy, protected reefs and a mix of calm and exhilarating conditions. With the right guidance, the site delivers a genuine sense of the remote Pacific that keeps divers returning to Micronesia.
For Non-Divers
Yap stone money banks, Traditional dance performances, Rainforest waterfall hikes
Quick Stats
Dive Logistics
- Manta Ray Bay Dive Shop
- Yap Divers
- Bill Acker's Manta Ray Bay
Photography Info
Best for: wide_angle
Nearby Stay
Manta Ray Bay Hotel
Colonia, Yap • 4km away
Yap Pacific Dive Resort
Colonia, Yap • 4km away