I almost drowned white water rafting. It would have been ironic being that it was junior year in high school and I was captain of the swim team at the time. I'll paraphrase the story as much as possible:
-School trip to NC, on second to last day we go white water rafting
-Guide tries to flip the raft
-I was an arrogant punk and was telling people that I would swim the whole river, so I let myself be thrown in
-I got caught in this wave type thing where the water goes over this rock and pulls you down under the water..just enough so that my life jacket kept me near the top, but not above the water's surface and I couldn't get my head up.
-After about a minute (guide's estimate, I thought it was forever!) I was out of strength and literally my life flashed in front of my eyes so I was just about to give up when I was let up to get some air
-I was let up because another raft was going over the rapid and blocked the water for an instant
-I got some breath then went back under, the raft hit me on the head and dragged me out of the cycle
-I came out from under the raft and was promptly hit on the head by an oar by a girl in the raft who got scared when she saw me
Scariest time of my life, the cold water just sucks the breath right out of you and I felt really helpless. I'm not kidding about my life flashing before my eyes, it really does happen. For the whole rest of the day and the night I kept feeling like I was still being bashed around under water, it was a bit surreal.