Batu Laut

Batu Laut — literally “sea rock” in Indonesian — is an offshore reef and rock formation rising from the blue water of Raja Ampat, West Papua, Indonesia. The site’s exposed position draws strong currents that sweep nutrients past the structure, creating ideal conditions for dense aggregations of reef life.

Overview

The submerged rock emerges as a cleaning station and congregation point for a wide variety of species. Schools of fusiliers and anthias cloud the upper pinnacle, while trevally and rainbow runners circle in the open water. The rocky substrate hosts healthy growths of hard and soft coral, with sea fans fanning out into the current on the deeper flanks. Turtles frequently rest on ledges along the upper reef.

Visibility typically reaches 15–30 metres depending on current and season. Water temperatures hold between 27–30°C. The site is best dived during slack water or light current for comfortable exploration of the rock faces, though moderate current brings the most pelagic activity.

Marine Life

• Schools of yellowfin fusiliers, anthias, and blue-streak fusiliers
• Giant and bluefin trevally hunting in the water column
• Green and hawksbill turtles resting on ledges
• Sea fans and whip corals on deeper flanks
• Occasional reef sharks patrolling the base

Dive Profile

Divers typically circle the rock structure, dropping to 20–30 metres on the deeper seaward faces before ascending to explore the shallower coral-covered top. The site suits intermediate divers comfortable with mild current. Entry and exit are by boat.

Practical Information

• Depth range: 5–30 m
• Visibility: 15–30 m
• Current: Mild to moderate
• Best time: October–April (calm season)
• Water temperature: 27–30°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.