If I could, I would! Well, minus the shark bit. 👌
Most Helpful Guys
You can do all of that with gear, for much longer and expend tremendously less energy every step of the way. Flippers are used to minimize the energy needed to move, air inhaled to exert force.
You don't even want a diving knife? Also, please do not attempt to dive to any depth below 40-60' and just "come back up" real quick. You will hurt yourself.
That is some crazy shit. I might be able to hold my breath for 30 seconds HA