Alex Hyde / Various rockpool animals and seaweeds, photographed on a white background. Isle of Skye, Inner Hebrides, Scotland, UK, March. Digital composite.

Mateusz Piesiak / Young American oystercatcher (Haematopus palliatus) snatching food from adult on the shoreline. Long Island, New York, USA, July 2010. Winner, Young Wildlife Photographer, 2011 Wildlife Photographer o...

Billy Black / Steam over boiled Lobsters (Homarus americanus). Gilkey Harbour, Islesboro, Maine, USA.

Nigel Cattlin / Woman selling live fresh Fish and Shellfish in plastic baskets tethered to boat. Ha Llong Bay, Quang Ninh Province, Vietnam. 2016.

Marie Read / American oystercatcher (Haematopus palliatus), closeup of individual feeding by using its chisel-shaped bill to pry open shellfish, Fort De Soto Park, St. Petersburg, Florida, USA, March.

Kirkendall-Spring / Bucket of shrimp caught in the Puget Sound, Washington, USA, May.

Kirkendall-Spring / Men sorting and counting shrimp caught in the Puget Sound near the City of Edmonds, Washington, USA, May 2018.

Tony Wu / Fishermen on boat sorting through catch of Giant isopods (Bathynomus doederleinii) for use in foods such as senbei rice crackers or for display in aquaria. Suruga Bay, Shizuoka Prefecture, Honshu, Jap...

Tony Wu / Ama diver searching rocks for shellfish including Sea snail (Turbo sazae). Futo Harbour, Izu Peninsula, Honshu, Japan. June 2010.

Tony Wu / Ama diver searching rocks for shellfish including Sea snails (Turbo sazae) in decreasing visibility. Futo Harbour, Izu Peninsula, Honshu, Japan. June 2010.

Tony Wu / Ama diver searching for shellfish including Sea snails (Turbo sazae) amongst seaweed. Hose supplies diver with air and enables communication with husband at surface. Futo Harbour, Izu Peninsula, Honsh...

Tony Wu / Ama diver searching for shellfish including Sea snails (Turbo sazae) amongst seaweed. Hose supplies diver with air and enables communication with husband at surface. Futo Harbour, Izu Peninsula, Honsh...