Fig. 17: The water on this sunny day was very clear. One could even observe the fish in the water. This is a bottom neoprene trout. 30th Reuss Swimming from Lucerne to Sins. RICOH Caplio GX8; Δt=1/331 s; f=5.8 mm; f/2.5; ISO 64; 13 June 2009 09:53:24
