Credit: JACK PERKS PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: Eel pass passing underneath a small stone arch bridge. Eel passes allow eels and elvers to continue moving through freshwater where there are structural barriers or obstacles. Filmed on a river in Gloucestershire, England.

Release details: Model release not required. Property release not required.

Keywords: 10 seconds or greater, accessibility, animal themes, arch bridge, biological, biology, bridge, british, day, eel and elver passes, eel pass, elver pass, england, europe, european, fauna, flowing, gb, gloucestershire, great britain, nature, nobody, outdoors, real time, science, scientific, solution, stone bridge, uk, united kingdom, water, wide shot, zoological, zoology

Licence fees: A licence fee will be charged for any media (low or high resolution) used in your project.