Jeff Rotman / Bluewater hunter surfaces with giant Yellowfin Tuna (Thunnus albacares) killed with a hand-made, 2m speargun, Mexico, Pacific Ocean.

Juergen Freund / Bajau fisherman dives for fish with speargun, Sabah, Borneo, Malaysia

Juergen Freund / Bajau boy proudly holds speargun with fish, Sabah, Borneo, Malaysia

Jeff Rotman / Scientist with speargun to attach visual tag on Basking shark, Isle of Man, Irish Sea, UK