Geronisos Island

別名： 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.