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OpenDive Atlas

An open-source atlas of the world's dive sites and the marine life seen at each one.

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First Cathedral, United States · OpenDive Atlas

Dive sitesUnited States

First Cathedral

Hawaii — Lanai, United States

BoatCavernIntermediateUnverified starter entry

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About this site

A lava cavern with shafts of light streaming through openings in its roof.

Marine life commonly seen here

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Site facts

Location: Hawaii — Lanai, United States
Coordinates: 20.7300° N, 156.9600° W
Dive type: Boat, Cavern
Experience level: Intermediate
Visibility: 20–40 m
Water temperature: 23–27 °C
Maximum depth: 18 m
Typical current: Mild

Coordinates are approximate. Always confirm entry points, conditions and permits with a local operator.