Credit: JACK PERKS PHOTOGRAPHY/SCIENCE PHOTO LIBRARY

Caption: High-speed footage of brown trout (Salmo trutta) swimming in the River Frome, Dorset, UK.

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

Keywords: 40 seconds or greater, animal themes, biological, biology, brown trout, day, dorset, fauna, fish, fresh water, freshwater, frome, high-speed, lake trout, nature, nobody, real time, river, salmo trutta, science, scientific, slow motion, small group of animals, trout, underwater, wide shot, wild animal, wildlife, zoological, zoology

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