This is a wild video from start to finish. I am a member of a very weird WhatsApp group text that I have no idea that I got in, but it includes tons of crazy out-there videos like this one. Whatsapp sucks so it makes you download the videos which is why I can post them to Twitter. I now know this video comes from a YouTuber named YBS Youngbloods. This video is insane. First you see a Tiger shark trying to attack a turtle, then you get the turtle escaping, then the "Tiger" attacks the paddleboard.
The "Tiger" is the well-known Tiger Shark.
Those things attack anything that moves. It's crazy that this dude was able to get his go pro and get back onto his paddleboard.