9, I was swimming in the sea (little far from the beach... okay it was a lot FAR) but then suddenly HUGE waves started to came because of the ships or awful weather i cant remember much, I couldn't even see the surface man, it was so horrifying, you cant move properly, you cant BREATHE it hurts SO MUCH I'm glad i didn't pass out, I barely made it. (and never told my parents about this)
18 was my latest at least, last summer, fell from my longboard downhill in pretty good speeds due to an unsupervised bump. Didn't have a helmet on because I'm fucking stupid, but luckily fell sideways and mostly avoided head damage. I don't think it's really a near-death experience, but since people have died and got permanently injured in same situations, I guess it'll work here. And no, my arm is still not completely healed, at least cosmetically.