Scratching an itch? Trevallies have found a bold solution to their fishy problems: brushing against the sleek bodies of large reef sharks.

Sharks at your service: trevally fish risk it all to scratch their itchScratching an itch, scraping off parasites and sloughing off dead skin cells are hard to do without hands. But when project leader Nico Fassbender watched 500 hours of BRUVS footage filmed in Seychell...saveourseas.com