Tube sponges
Fig. 25: Underwater reef landscape with tube sponges — Dunia Kecil, Wajil Batan, Rajat Empat, Indonesia, Nikon Coolpix 5400, Fischaugen-Vorsatz, March 15, 2005 — EXIF: E5400; Δt=1/90 s; f=24 mm; f/7.3; ISO 50; 2005-03-15 15:59:47