Truk Lagoon - Chuuk (Truk) Lagoon

Truk Lagoon isn't just a dive site, it’s a time capsule. Dropping onto the deck of a freighter at 30 meters, you’re not just seeing history, you’re swimming through it. We love the sheer scale of the place; full supply holds with gas masks, ammunition, and even tanks still lashed to the deck. It’s eerie, but also completely captivating. The wrecks here are smothered in corals, an artificial reef system thriving on tragedy. Look closely and you’ll find nudibranchs crawling over artillery shells, while schools of fusiliers swirl around cargo cranes. Our favourite dive is often one of the larger freighters, like the San Francisco Maru, where the hold exploration feels like an archaeological dig. Just remember to be mindful of your buoyancy; silt-outs happen fast. This place is perfect for intermediate wreck divers who appreciate both history and the incredible tenacity of marine life reclaiming these steel giants.

Location: Chuuk (Truk) Lagoon, Micronesia, Central & South Pacific
Coordinates: 7.412900, 151.842800
Type: wreck
Maximum Depth: 30m
Difficulty: Intermediate

Best Time to Dive in Chuuk (Truk) Lagoon

The warmest water temperatures in Chuuk (Truk) Lagoon occur in January, averaging 28.9°C. The coolest conditions are in December at 28.9°C.

Monthly Water Temperatures

January: 28.9°C (air: 27.8°C)
February: 28.9°C (air: 27.7°C)
March: 28.9°C (air: 27.5°C)
April: 28.9°C (air: 27.5°C)
May: 28.9°C (air: 27.7°C)
June: 28.9°C (air: 27.5°C)
July: 28.9°C (air: 27.5°C)
August: 28.9°C (air: 27.7°C)
September: 28.9°C (air: 27.7°C)
October: 28.9°C (air: 27.9°C)
November: 28.9°C (air: 27.9°C)
December: 28.9°C (air: 27.9°C)

Nearest Dive Centres to Truk Lagoon

Marine Life in Chuuk (Truk) Lagoon

Home to 213 recorded species including 133 reef fish, 36 hard corals, 17 sea cucumbers, 12 sea snails & nudibranchs, 5 sharks & rays, 4 clams & mussels.

Notable Species

Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
Bleeker's Parrotfish (Chlorurus bleekeri) - Reef Fish
Bullethead Parrotfish (Chlorurus sordidus) - Reef Fish
Long-nosed Parrotfish (Hipposcarus longiceps) - Reef Fish
Blunt-head Parrotfish (Chlorurus microrhinos) - Reef Fish
Small giant clam (Tridacna maxima) - Clams & Mussels
Saddled Parrotfish (Scarus dimidiatus) - Reef Fish
Clown Tang (Naso lituratus) - Reef Fish
Black sea cucumber (Holothuria atra) - Sea Cucumbers
Greenfish (Stichopus chloronotus) - Sea Cucumbers
Schlegel's Parrotfish (Scarus schlegeli) - Reef Fish
Roundhead Parrotfish (Scarus globiceps) - Reef Fish
Dusky Parrotfish (Scarus niger) - Reef Fish
Blackspotted Sea Cucumber (Pearsonothuria graeffei) - Sea Cucumbers
Batavian Parrotfish (Scarus psittacus) - Reef Fish
Crown of thorns starfish (Acanthaster planci) - Starfish
Sea chub (Kyphosus cinerascens) - Reef Fish
Foxface (Siganus vulpinus) - Reef Fish
Banded maori wrasse (Cheilinus fasciatus) - Reef Fish
Unicornfish (Naso annulatus) - Reef Fish

Recommended Packing List for Truk Lagoon

Based on average water temperature of 28.9°C.

Shorty or Rashguard - warm 29°C water needs minimal exposure protection
Mask - essential for every dive
Fins
BCD - buoyancy compensator
Regulator - your most safety-critical piece of gear
Dive Computer - tracks depth, time, and NDL
Surface Marker Buoy (SMB) - essential for boat pickups
Dive Torch - useful for crevices and colour at depth
Underwater Camera - capture your diving memories