Aerborek Jetty Dive Site

The Aerborek Jetty Dive Site is located at the village of Arborek on a small island in the Dampier Strait, Raja Ampat, West Papua, Indonesia. Arborek is one of the most visited villages in Raja Ampat — famous for its traditional weaving, homestay tourism, and the remarkable diving literally beneath its jetty. The site is best known for mandarin fish (Synchiropus splendidus), the jewel-like dragonets that perform their courtship display here at dusk.

Overview

The jetty pilings and surrounding rubble reef are home to one of Raja Ampat’s most reliable mandarin fish populations. Mandarin fish are among the most visually spectacular reef fish in the ocean — their psychedelic blue, green, and orange marbling is produced not by pigment but by structural colour cells unique among vertebrates. Each evening at dusk, pairs rise just above the rubble surface in a slow-motion courtship spiral before spawning and retreating to the coral. The display typically lasts only a few minutes, making timing essential.

Beyond the mandarin fish, the jetty structure accumulates excellent macro life. Ghost pipefish and seahorses inhabit seagrass patches nearby. Nudibranchs in extraordinary variety cover encrusted rubble. Frogfish cling to sponge-covered pilings, and mantis shrimp are active at the reef edge. The surrounding rubble reef also holds blue-ringed octopus for those with patience and a careful eye.

Water temperature holds at 27–29°C. The shallow depth makes for extended bottom times, and the gentle conditions are appropriate for beginners comfortable with boat diving.

Marine Life

• Mandarin fish (courtship display at dusk — the primary attraction)
• Ghost pipefish and seahorses in seagrass
• Nudibranchs in exceptional variety on the rubble
• Frogfish on encrusted jetty pilings
• Blue-ringed octopus in shells and crevices

Dive Profile

Daytime dives explore the jetty structure and surrounding rubble reef at 5–15 metres for general macro. The signature mandarin fish dive is timed for dusk — divers position themselves in the rubble at 3–8 metres and wait for the display. Beginner divers with basic buoyancy control enjoy this site. Entry and exit are by boat.

Practical Information

• Depth range: 2–15 m
• Visibility: 10–20 m
• Current: Light (sheltered)
• Best time: Year-round; mandarin fish display every evening at dusk
• Water temperature: 27–29°C
• Entry: Boat

Sources: Papua Diving - Raja Ampat Dive Sites, Bluewater Dive Travel - Raja Ampat Diving, La Galigo Liveaboard - Top 10 Raja Ampat Dive Sites, Girls That Scuba - Scuba Diving Raja Ampat, PADI - Diving in Raja Ampat. Last updated 2026-04-04.