Scraping the bottom
This is how shrimps (prawns) are caught off La Paz in the Sea of Cortez, Mexico. Whether a trawl net is small, like this one, or large, the design is similar worldwide: two steel doors help keep open the maw of the net as a boat drags it along. Such a design is hugely effective, catching shrimps but also everything else in its path. As it drags along the bottom, it also destroys whole communities, including the corals and sponges that provide habitat for so many other animals and which may take years to grow back.
Nikon D2X + 14mm lens; 1/60 sec at f9; ISO 250; Subal housing; Hartenberger strobes.
Brian Skerry, United States of America
Brian is an award-winning photojournalist specialising in marine wildlife and underwater environments. Since 1998, he has been a contract photographer for National Geographic, covering a wide range of subjects and stories. He has published five books and has featured in numerous publications worldwide. He frequently lectures on photography and conservation issues.