The brash Brit took a camera crew to the beaches of Costa Rica to capture the shady fishing enterprise - and he was almost killed in the process.
Ramsay tells Playboy magazine, "That was a little bit hairy... The fishmongers have these armed guards patrolling fortress-like towers, so we tried to get in and ran into a guard.
"They poured petrol all over my hair and neck and tried to set us on fire."
The chef admits his dangerous film project was a little over-ambitious: "One stupid chef with a documentary crew was never going to stop these a**holes from decimating this population of fish, but I thought, 'Why the hell not try...? If you don't take a stand, who will?'"
And Ramsay insists shark fins are not a delicacy: "It tastes like nothing, but it's a sign of wealth and power in Asia to have it in your soup."