I am a scuba diver, and we had a report about a school teacher in California who was diving in a kelp bed, and got tangled in monofilament fishing line. She dropped her knife, and couldn't get free. She died about 5 ft. under the surface. Monofilament line is completely invisible under water. you can feel that something is holding you, but unless you can feel for it, there is no way to find out where it is. it is just like an invisible force that you can't overcome. If you are tangled in it, you CANNOT generate enough force to break it. Not even 15 lb. test line. Something like that probably happened to him. But he didn't have 15 minutes of air to try and get free. He had one breath, and when it was used up, he was gone. I bet his death took less than 60 seconds. (I always kept my knife on a line, so I couldn't lose it, even if I dropped it.)
this is the explanation that I've been looking for
what is the material of your knife?
