Hawaii Skin Divers

What is the accurate range of a harpoon gun like that? Seeing one reminds me of the scene from Jaws where they are firing harpoons at that terrifying great white. I'm sure he probably edited a few clips together but it looks like he caught quite a bit during the day of filming; a squid and a few fish. Do you know how long he is able to stay under at a time is? I have read that some skilled divers are able to go under for up to 10 minutes at a time which I found very impressive since I don't think I could go longer than a couple of minutes at most. The current world record is a little over 22 minutes, INSANE!

 

What do you reckon the longest you can hold your breath for is? And yeah I saw in the video he was swimming past several fish without grabbing them, a lot of talented fishermen are like that as well because they want to go for the big and juicy fish.

The first time I saw a torpedo was one of those rubber pool toys that you throw underwater and I remember how amazed I was to see it glide the length of the pool. Does the rubber help it glide more easily than the steel alone? I guess it covers the whole spear except for the tip?

Interesting, I did not know that they used weights to submerge themselves. What happens when they want to go back up? Do they drop the weighted belt to the surface or is not so heavy that it is burdensome to swim back up to the surface with?