This thing looks sketchy. Every swimmer in it, is using their legs to get that extra bit of propulsion going. And that big hole in the middle of the fin? The water goes straight through, there is no resistance. I'm no expert nor a freediver, but eh...

I suggested that it would be better if the blade was a stiffer grade, holeless and the motors were by the ankles. I'm on the assumption that it is a motorised monofin with an engine.

But they say, that the "motor" relies on the strength of your kick to get you moving. Doesn't that defeat the purpose of using your dolphin kick?

What do you technical mers think?

https://www.youtube.com/watch?v=oEfB...57176721856859