Big Wave pro-Alex Botelho was hospitalized after suffering a serious accident in a surfing tournament ... and the video of the crash is absolutely wild.
The 29-year-old Portuguese surfer was participating in the Nazare Tow Surfing Challenge when he had a scary wipeout and had to be saved by a Jetski pilot.
The situation got much worse when a massive whitewater wave rushed towards them and knocked the 2 people off the Jetski.
But, then things took an even worse turn when another wave came through and sent them flying through the air.
Botelho appeared to be unconscious by the time he washed to shore .