IntermediateReef · Wall · Cave · Swim-through · Pinnacle
Gato Island Tunnel

DifficultyInformation under review
Check the source context before using these values to plan a dive.
Contrary evidence
Novice
Divebooker.com describes the 'diver level' for Gato Island - The Cave as 'Novice' and for Gato Island generally as 'Novice' for The Guardhouse reef, with other sites for experienced divers.
Divebooker.com · 2026-09-16T05:43:00.944Z
novice
Read source context
Divebooker.com describes the 'diver level' for Gato Island - The Cave as 'Advanced'. Other sources indicate Gato Island Tunnel is generally recommended for intermediate to advanced divers due to the overhead environment and potential for currents.
Divebooker.com · 2026-09-16T05:45:44.006Z
Reported by one source · Bluewater Dive Travel
Maximum depthInformation under review
Check the source context before using these values to plan a dive.
One source says both things. It reports this value and also contradicts it.
Contrary evidence
30m+
DiveJourney states the reef profile runs down to 30m+, and Scubago indicates depths up to 65 meters.
DiveJourney · 2026-09-16T05:43:00.944Z
Same source as the recorded value
25
Read source context
DiveJourney indicates a depth range of 15m - 30m+, with the tunnel and reef profile running down to 30m+. Scuba Diving states the average depth is 21m and mentions a bottom/water temp range of 25-29°C. Other sources state the Gato Island Tunnel has walls extending to a maximum depth of 25 meters, while the tunnel itself is at 5 meters depth and another source indicates a 22-meter deep tunnel.
DiveJourney · 2026-09-16T05:45:44.006Z
Same source as the recorded value
Best season end
Historical value — unverified
May
Confirm this historical information with a local operator.
Know this? Tell usAbout This Dive Site
Gato Island Tunnel, Malapascua
This guide concerns Gato Island's underwater tunnel, a specific route within a wider island dive destination. It does not represent every reef, wall or overhang around Gato. Sea Explorers distinguishes tunnel entry from reef dives that remain outside it, and Thresher Shark Divers likewise describes surrounding reef exploration as a separate attraction. Confirm which option a trip includes before comparing itineraries.
Separate the tunnel from the reef
The tunnel is an overhead environment. Sea Explorers states that entry is for suitably trained and experienced divers when conditions allow. This guide does not assess your qualifications, supply an entry procedure or grant permission to enter. A general certification label or a description of shallow water cannot settle whether a particular overhead route is appropriate for you.
If you prefer to stay outside, ask the operator specifically about a reef-only itinerary and whether the group arrangements support that choice. Do not assume that booking a trip labelled Gato requires a tunnel transit. Equally, do not assume an advertised island trip includes one: agree on the actual route and any alternatives with the operator.
Wildlife information has a scope
Thresher Shark Divers associates whitetip reef sharks with the tunnel area. This is reported wildlife presence, not a guarantee that sharks will be visible on a particular visit. Sea Explorers also describes marine life around Gato more broadly. An island-wide report should not be read as evidence that every animal occurs inside the tunnel or along the same dive route.
Questions for your operator
Ask what training and recent experience the proposed dive requires, how the operator assesses suitability, and what alternative is available if the planned route cannot be used. Describe your own experience honestly. Ask how the day's conditions affect the itinerary, and confirm the briefing and supervision arrangements before booking. These questions identify information missing from a general guide; they are not a substitute for specialist training or an operational dive plan.
Thresher Shark Divers describes combining a morning Kimud trip with Gato later in the day by advance arrangement. Treat that as an example from that operator, not a fixed daily schedule. Confirm that your intended Gato route is part of the actual booking.
Limits of this account
Published descriptions of the surrounding walls, tunnel entrance and passage can refer to different features. This description does not establish a measured tunnel length, a universal route depth or a qualification minimum. It also does not resolve every condition field elsewhere in the record. A useful correction should identify the particular route and the source supporting it.
Current Conditions
Typical current strength at this dive site
Variable
Current strength changes with tides and conditions. Check local conditions before diving.
Strength Scale
None
Mild
Moderate
Strong
Marine Life
1 species recorded at this site
Hazards & Safety
Be aware of these potential hazards at this dive site
Current
Severity: MediumCurrents can be deceptive in the tunnel and vary around the island.
Overhead environment
Severity: MediumThe tunnel is an overhead environment requiring comfort and a conservative profile.
Dangerous marine life
Severity: LowSea snakes are venomous but generally non-aggressive towards divers.
Sources
- 3 Gato Island dive sites + MAP & reviews. Scuba Diving
- Bluewater Dive Travel
- Divebooker.com
- DiveBuddy.com
- DiveJourney
- Liveaboard.com
- OceanVibration
- PADI
- Scubago
- Sea Explorers
- The Midnight Blue Elephant
- Thresher Shark Divers
- Wikipedia
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AdvancedDepth Profile
Reported by one source · Bluewater Dive Travel
Maximum DepthInformation under review
Check the source context before using these values to plan a dive.
One source says both things. It reports this value and also contradicts it.
Contrary evidence
30m+
DiveJourney states the reef profile runs down to 30m+, and Scubago indicates depths up to 65 meters.
DiveJourney · 2026-09-16T05:43:00.944Z
Same source as the recorded value
25
Read source context
DiveJourney indicates a depth range of 15m - 30m+, with the tunnel and reef profile running down to 30m+. Scuba Diving states the average depth is 21m and mentions a bottom/water temp range of 25-29°C. Other sources state the Gato Island Tunnel has walls extending to a maximum depth of 25 meters, while the tunnel itself is at 5 meters depth and another source indicates a 22-meter deep tunnel.
DiveJourney · 2026-09-16T05:45:44.006Z
Same source as the recorded value
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