Perch Swarm
Fig. 49: A swarm of young perches (Perca fluviatilis) playing in a seagrass meadow. — Nikon D200, Nikkor 10.5mm DX Fisheye, Rütenen/Beckenried, Lake Lucerne, 6 September 2009 — EXIF: Nikon D200; Δt=1/180 s; f=10.5 mm; f/7.1; ISO 200; 2009-09-06 14:00:51