Jeff Rotman / El Molo Warriors/ Hunters hunting hippopotamus (Hippopotamus amphibius) at Hippo Hunt using pole spears and ropes, El Molo Tribe, Lake Turkana, Kenya.

Kristel Richard / Bas-reliefs with soldiers in horse-drawn carriages, decorating the ground level of the temple at Angkor Wat, Angkor, Cambodia. March 2013

Alex Mustard / Pair of divers prepare to surface after an invasive lionfish (Pterois volitans) culling dive. With collecting tubes filled, final lionfish are brough to the surface on hand spears. Lionfish are native...

Alex Mustard / Culled invasive lionfish (Pterois volitans) on a hand spear. Lionfish are native to the Indo-Pacific, but introduced to the Caribbean Sea from aquariums, they are now widespread, abundant and a proble...

Alex Mustard / Diver (Steve Braodbelt) prepares to spear Male lionfish (Pterois volitans). Indo-Pacific lionfish are an invasive species on Caribbean reefs and are hunted under license to keep their population and t...

Alex Mustard / Diver with a speared lionfish (Pterois volitans). Indo-Pacific lionfish are an invasive species on Caribbean reefs and are hunted under license to keep their population and therefore predation level l...

Alex Mustard / Diver re-sharpens the points of his lionfish (Pterois volitans) hand spear. Lionfish are native to the Indo-Pacific, but introduced to the Caribbean Sea from aquariums, they are now widespread, abunda...

Neil Aldridge / A young Zu/'hoasi Bushman hunter looks for Spring Hare (Pedetes capensis) burrows on the plains of the Kalahari. The long stick has a hook on the end and is inserted into a burrow to catch the hares....

Jeff Rotman / El Molo warriors pulling out the pole spears from a dead Hippopotamus (Hippopotamus amphibius) killed in their hunt, Lake Turkana, Kenya, April 2008.

Pete Oxford / Huaorani lances decorated with feathers. These are used for hunting and combat weapons. Gabaro Community, Yasuni National Park, Ecuador, June 2007.

Juergen Freund / Man spear fishing from his dugout canoe. This is a Marine Protected Area managed by the local community, and fish are abundant. M'buke Island, New Ireland, Papua New Guinea, June 2010

Juergen Freund / West Papuan fishermen spearfishing in their outrigger boat. Raja Ampat, West Papua, Indonesia, February 2010.