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Grand Cayman

Trinity Caves (West Wall)

  • Max depth30 m (98 ft)
  • CertificationOpen water / no overhead
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What it looks like

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Videos and posts

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Other people's footage, not advice: how someone else dives here says nothing about what suits your team. Dive within your training.

The dive

Per Red Sail the word 'caves' is a bit misleading: these are swim-throughs, not caves. The site is known from the film The Firm (1993).

The swim-throughs come out deep on the wall, where the wall drops away further: watch your depth and no-deco time. Red Sail requires your own dive computer, staying within five minutes of your no-deco limit and a safety stop on dives to 30 m.
Source: Red Sail Sports – dive sites ↗Source: Red Sail Sports – dive policy ↗
Profile and sections

Per Red Sail the word 'caves' is a bit misleading: these are swim-throughs, not caves. The site is known from the film The Firm (1993).

Source: Red Sail Sports – dive sites ↗Source: Red Sail Sports – Grand Cayman's hidden dive sites ↗
Depth and profile
Three large swim-throughs wind through the reef and come out on the wall at ~24 m (80 ft). The dive goes to 30 m (100 ft) and ends on top of the wall at ~15 m (50 ft).
Configuration
Short swim-throughs with daylight, but deep: recreational gear with a torch, within your no-deco time (estimate).
Who can dive where
  • CaveAt least Open water / no overhead
  • Whole caveConfigurations: Backmount / twinset / Sidemount / CCR / Small cylinders / no-mount (speleo sumps)
  • Whole caveGoes down to 30 m (trimix or deco may be needed) · doesn't decide who may dive
Entry or dive feeThrough a dive centre or guide

This is how the planner decides who in your team may dive this cave. Rules your own trip adds (organizer, a mail, the AI) show with your trip.

Source: Red Sail Sports – dive sites ↗Source: Red Sail Sports – Grand Cayman's hidden dive sites ↗

How to get there

Boat dive on the West Wall off West Bay, a few minutes by boat from Seven Mile Beach. Moorings are first come, first served: the site can't be booked in advance.

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Around Trinity Caves (West Wall)

FillsNo fill station known nearby
Other sites6

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Sources, sharing and disclaimer

Sources

Source: Red Sail Sports – dive sites ↗Source: Red Sail Sports – Grand Cayman's hidden dive sites ↗

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Certification requirements, configurations and trimix depths are estimates for planning. Always check them locally and dive within your training. Compiled from web research (Oct 2026): Eden Rock Diving Center's own description on PADI and the PADI site pages it contributed (with pins), the websites of Red Sail Sports (dive sites and dive policy) and Ocean Frontiers (site pages with pins, shore diving, rental), Explore Cayman, the Department of Environment (marine parks, public moorings) and the Health Services Authority (chamber). These are reef caverns, tunnels and swim-throughs with daylight in reach, from the shore in George Town and by boat on the West Wall and in East End; the requirements come from the dive centres. Certification and configurations are estimates.