Alyui Bay - Raja Ampat
Alyui Bay, tucked into the western side of Waigeo, is where we head when the mission is small stuff. Forget the big pelagics here; this is critter territory. We’ve spent hours finning slowly along its walls and slopes, spotting pygmy seahorses clinging to gorgonians and ghost pipefish swaying in the current. It’s a macro photographer's dream, a place where patience really pays off. The max depth usually hovers around 25 metres, making it approachable for most divers, though keeping an eye on your buoyancy is key when you’re hovering over delicate subjects. Currents can pick up, especially near the mouth, so it’s not always a completely placid drift.
- Location
- Raja Ampat, Indonesia, Southeast Asia
- Coordinates
- -0.500000, 130.200000
- Type
- reef
Marine Protected Area: SUAKA ALAM PERAIRAN KEPULAUAN RAJA AMPAT DAN LAUT SEKITARNYA
Best Time to Dive in Raja Ampat
The warmest water temperatures in Raja Ampat occur in November, averaging 30.3°C. The coolest conditions are in July at 29.3°C.
Monthly Water Temperatures
- January: 29.7°C
- February: 29.4°C
- March: 29.6°C
- April: 29.9°C
- May: 29.9°C
- June: 29.7°C
- July: 29.3°C
- August: 29.4°C
- September: 29.6°C
- October: 30.0°C
- November: 30.3°C
- December: 30.1°C
Nearby Dive Sites in Raja Ampat
- Aerborek Jetty (reef)
- Aerborek Jetty Dive Site (reef)
- Agusta Reef (wreck)
- Agusta Reef (reef)
- Algae Patch 1 (reef)
- Algae Patch 1 (cenote)
- Andrea's Point
- Anita's Garden (reef)
- Arborek Dive Shop
- Arborek shark point
- Arefi Reef (reef)
- Arefi Reef (reef)
- Arno’s Underwater Reef (reef)
- Bag Island
- Barracuda East
Nearest Dive Centres to Alyui Bay
- Ambon Dive Explore
- Andau Dive Resort - ["PADI"]
- Coralia Liveaboards - ["PADI"]
- Delvin
- Dive Bluemotion
- Dive into Raja Ampat - ["PADI"]
Marine Life in Raja Ampat
Home to 250 recorded species including 176 reef fish, 43 hard corals, 8 seagrass & algae, 5 sea cucumbers, 4 clams & mussels, 4 other.
Notable Species
- Boring Clam (Tridacna crocea) - Clams & Mussels
- Blue-lined Surgeonfish (Acanthurus lineatus) - Reef Fish
- Fluted clam (Tridacna squamosa) - Clams & Mussels
- chocolate chip sea star (Protoreaster nodosus) - Starfish
- Pinkfish (Holothuria edulis) - Sea Cucumbers
- Staghorn coral (Acropora solitaryensis) - Hard Corals
- Stripy (Katsuwonus pelamis) - Reef Fish
- Indian mackerel (Rastrelliger kanagurta) - Reef Fish
- Bristle-toothed Surgeonfish (Ctenochaetus striatus) - Reef Fish
- Kawakawa (Euthynnus affinis) - Reef Fish
- thalassia (Thalassia hemprichii) - Seagrass & Algae
- Small giant clam (Tridacna maxima) - Clams & Mussels
- Bullet Mackerel (Auxis thazard) - Reef Fish
- Common Mushroom Coral (Fungia fungites) - Hard Corals
- Species code: Ea (Enhalus acoroides) - Seagrass & Algae
- Table coral (Acropora clathrata) - Hard Corals
- Branch coral (Acropora florida) - Hard Corals
- cymodocea (Cymodocea rotundata) - Seagrass & Algae
- Narrow-barred Spanish mackerel (Scomberomorus commerson) - Reef Fish
- Tail-spot Combtooth-Blenny (Ecsenius stigmatura) - Reef Fish
Recommended Packing List for Alyui Bay
Based on average water temperature of 29.7°C, currents 20 cm/s.
- Shorty or Rashguard - warm 30°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