Fireworm - with a name like that, their sting must be pretty serious! ....but what actually causes the burning pain of the sting? On this episode, Mark will determine once and for all whether the intimidating fireworm is truly venomous or just packs an incredibly painful punch. To do so, he'll endure TWO burning stings and a tortuous overnight on a beach in South Florida.

More stinging adventures with Mark Vins: Shocked by an Electric Eel!: STUNG by a Man O' War Jellyfish!:

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Big thanks to Dr. Hunter Hines for the awesome micro footage in this video!

PLEASE DO NOT ATTEMPT TO REENACT OR RECREATE ANY EVENTS OR SCENES  FROM OUR VIDEOS. THE ANIMALS, INSECTS, PLANT LIFE, AND TERRAIN FEATURED IN  OUR VIDEOS CAN BE DANGEROUS AND CAN POSE A SIGNIFICANT RISK OF INJURY OR  DEATH. The Brave Wilderness hosts and crew are professionally trained and routinely  receive assistance from wildlife experts, guides, and safety personnel when filming to  ensure the safety of our crew and all wildlife. No animals were harmed or removed from  their natural habitat while making this video. Brave Wilderness has obtained permission  to film in each location featured in this video.