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A diver silhouetted against the light in the Gato Island tunnel
Malapascua, Gato Island & the thresher shoals

Gato Island and its tunnel

Gato Island is a rocky islet about 15 km north-west of Malapascua, roughly 50 minutes by boat, protected as a sea-snake and fish sanctuary since 1997. Its best-known dive is the tunnel: an L-shaped passage of about 30 m through the island, entered near 5 m and exiting around 12 m, where whitetip reef sharks often rest. Banded sea kraits, catsharks and nudibranchs are common around the island.

Quote a transfer to Maya port Last checked: Oct 2026
Depth
5-24 m
Level
Intermediate
Access
Boat
Area
Malapascua
  • An L-shaped tunnel through the island
  • Whitetip reef sharks near the exit
  • Banded sea kraits, catsharks and crabs

Dives around Gato

Dive centres list several sites on the island: the Cave (tunnel), the Wall, Guardhouse, West, Whitetip Alley, Nudibranch City and Cathedral. Most sit between about 20 and 24 m.

Dives around Gato
From MalapascuaAbout 50 minutes by boat
TunnelAbout 30 m long; in near 5 m, out around 12 m
LevelExperienced divers for the tunnel; the walls suit Open Water
ProtectedSea-snake and fish sanctuary (1997), part of the shark and ray sanctuary (2015)

Sea snakes

The banded sea kraits that give Gato its reputation are venomous. Keep your distance and never handle them.

Gato Island from the air with dive boats moored
Gato Island from above
A whitespotted bamboo shark resting under a ledge at Gato Island
A bamboo shark under a ledge
FAQ

The Cave (Gato Island): questions

Do you need Advanced Open Water for the Gato tunnel?

It is described as a dive for experienced divers and rated at Advanced level. It is dark in the middle and you will want a torch; ask your dive centre what it requires.

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