Mill Channel: Ridge

Best months: Dec–Apr

Why dive here

With 297+ marine species recorded in the area - including barracuda, blacktip reef sharks, giant moray eels, grey reef sharks and seahorses - Mill Channel: Ridge offers some of Yap's richest drift diving. Water ranges 29-30°C, warmest June, July, October.

Best timeDec–Apr

WetsuitA 3mm shorty or thin full wetsuit

Marine lifeBarracuda, Blacktip Reef Sharks, Giant Moray Eels, Grey Reef Sharks and Seahorses · 297+ species recorded

Water29-30°C · warmest June, July, October

CharacterDrift dive

StandoutExceptional marine biodiversity

Mill Channel: Ridge, for us, is all about the show. Forget the gentle drift through coral gardens. This is where you strap in for a proper Yapese current ride, especially if you catch it on an incoming tide. We’re talking about schools of scad so dense they become a living, shimmering wall. You just hang on, feel the push of the water, and watch them filter the light as they surge past. It’s an electric feeling, being right in the heart of that energy. We love looking for the bigger predators waiting in the wings, like those impressive camouflage groupers, chunky and unbothered by the chaos. Keep an eye out for the parrotfish, particularly the humphead unicornfish, casually munching away. This site really suits divers who appreciate the raw power of the ocean and the sheer scale of schooling fish. It’s less about intricate macro life and more about the exhilarating theatre of the open water.