Taking a dip in the ocean is without question one of the most relaxing and rewarding experiences on Earth. The feeling of cool, salty water hitting your skin and the rush of diving under the waves while surrounded by some of Mother Nature's best work is thrilling, but it also comes with a few inherent dangers, such as coming face-to-face with a shark or two.

And unfortunately for spearfisherman Parker Simpson, he learned that lesson the hard way.

In the four-minute video uploaded to YouTube, as seen above, Simpson shares his encounter with a 7- to 8-foot reef shark he met while spearfishing with friends at Middle Sambo reef off Boca Chica in the Florida Keys.

“He first went at my dive buddy Justyn but immediately turned toward me,” Simpson wrote in the video’s description. “He first bit my left fin then took a chunk out of the right one before biting my leg and cutting the speargun line. I assumed he was trying to steal the black grouper i was holding. But after I lost the grouper and watched it swim to the bottom, the shark kept coming at us.”

Simpson went on to explain that his divemate Justyn defended the duo by shoving the end of his speargun into the shark’s mouth. The shark then quickly swam to the bottom of the ocean and the men made a rush for their boat.

Throughout the video, viewers can see just how much damage the shark did to Simpson’s leg in mere seconds, however, even with the wound, Simpson and his friend remained calm and clear-headed, no doubt due to their training and experience.

“Always dive with a buddy and someone who is trained in first aid,” Simpson warned. “I would not have made it back to the boat without the help of another strong swimmer and would have bled out had I not been patched up so well by Amanda. The shark tore through the skin, fat tissue, muscle, muscle sheath, and unfortunately my tibial artery which caused me to lose more than a liter of blood.”

At the emergency room, Simpson was stitched up by doctors for three and a half hours, according to his Gofundme page, where he is attempting to raise money to cover his medical care and replace his diving equipment – meaning he definitely has plans to get back in the water.