Blackwater (Balayan Bay)

Anilao is the world's busiest blackwater hub; divers drift the water column at night beside a weighted, light-rigged downline. For experienced divers only.

Depth

0–25m

Current

Mild

Diver level

Advanced open water

Entry

Boat

Unique features

Open-ocean night drift on a lit downline over deep water
Larval fish, paper nautilus, blanket octopus and pelagic oddities from the diel vertical migration

Sources & last checked

Checked July 2026

This is a researched draft, not yet human-verified. The seasonality and logistics are drawn from the sources below — confirm specifics (permits, fees, closures) with an operator before you book.

Blackwater Diving in Anilao - The Pelagic Unknown — Indo Pacific Images

Note on the data: Coordinates are approximate; not surveyed dive-site GPS.