Cave
Fig. 7: Black divers in a dark cave. Unfortunately the CCD chip of the Ricoh GX8 is very noisy at ISO higher than 400. — Sea & Sea DX-8000G, Koh Ha, Thailand, December 2007 RICOH Caplio GX8; Δt=1/98 s; f=5.8 mm; f/2.5; ISO 200; 23 December 2007 07:44:54