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Geronisos Island

Also known as: St George Island · Saint George Island · Geronissos

The dive begins on a ridge at 12 m, where the dark entrance of the cave opens between the rocks; less experienced divers follow the top of the ridge, while others enter the tunnel, follow its turns and exit through a crack in the reef at about 18 m. Because the reef is porous volcanic rock, bubbles seep out of it after divers pass. The lower ridge at about 35 m is covered in pink, purple and orange algae and sponges that glow under a torch. Dotted sea slugs, pink Flabellina and other nudibranchs, dusky groupers, lionfish, bream, damselfish and wrasse are common. It is often combined with Manijin Island on a two-tank trip.

Divesite facts

Level
All Divers
Categories
Reef, Cave, Swim-throughs
Typical depth range
12 to 35 m
Coordinates
34.9029, 32.3090

Position on the map

Tags

reef cave swim through nudibranchs dusky grouper lionfish sponges calcareous algae

Names of this dive site

Divers know a place by different names. Add the name you know, with its language if it belongs to one. Every name helps other divers find the site.

  • Geronisos Island
    Main name
    Votes as main name: 0
  • St George Island
    Votes as main name: 0
  • Saint George Island
    Votes as main name: 0
  • Geronissos
    Votes as main name: 0

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