Chris Gomersall / 2020VISION / Northern gannet (Morus bassanus) plunge-diving for fish alongside pelagic trawler 'Charisma', Shetland Isles, Scotland, UK, October 2011

Tui De Roy / Brown Pelican (Pelecanus occidentalis) plunge diving in coastal shallows, Academy Bay, Santa Cruz Island, Galapagos Islands, Ecuador

Pete Oxford / Blue footed boobies plunge diving {Sula nebouxii} San Cristobal Is, Galapagos Islands

John Chan / Forster's tern (Sterna forsteri) plunge diving for a fish, Southern California, USA, June.

John Chan / Forster's tern (Sterna forsteri) plunge diving for fish in a saltmarsh estuary, Southern California, USA, May.

John Chan / Caspian tern (Hydroprogne caspia) plunge diving near a group of Elegant terns (Thalasseus elegans) gathering at breeding grounds, Southern California, USA, March.

Alan Murphy/ BIA / Brown Pelican (Pelecanus occidentalis) plunge-diving, multiple exposures, Texas

Alan Murphy/ BIA / Brown Pelican (Pelecanus occidentalis) plunge-diving,multiple exposures, Texas

Tui De Roy / Blue-footed Booby (Sula nebouxii) group plunge diving, Itabaca Channel, Santa Cruz Island, Galapagos Islands, Ecuador

Tui De Roy / Blue-footed Booby (Sula nebouxii) group plunge diving, Espumilla Beach, Santiago Island, Galapagos Islands, Ecuador

Tui De Roy / Blue-footed Booby (Sula nebouxii) plunge diving, Punta Cormorant, Floreana Island, Galapagos Islands, Ecuador

Tui De Roy / Blue-footed Booby (Sula nebouxii) plunge diving, Cerro Brujo, San Cristobal Island, Galapagos Islands, Ecuador