Lighthouse Cove

A cavern formation north of San Miguel Island, half above and half below the surface, with bats and swiftlets in the dry section. A calmer site than the offshore seamount.

Depth

518m

Current

Mild

Diver level

Open water

Entry

Boat

Unique features

  • Half-submerged cavern north of San Miguel Island
  • Bats and swiftlets roosting in the cave above the water
  • Sheltered, gentler conditions

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.

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