Mark goes hydro with my monofin

I endorse the Finis Monofin.

I am not getting any payment to endorse this fin and and I spent about $140 to own it. However, if Finis wants to hook me up with real cool toys... (Pssst, call me.)

This toy is a blast. The speed you can create is so massive that the walls become a threat and you have to consciously slow down to avoid an injury. Here is an image of Mark going crazy with my fin. He is about 12 feet deep at the VNSO pool and moving fast; (Of course Adobe Photoshop helped), but he is really moving fast despite the Photoshop "radial blur" image filter.

Besides having fun, the fin stretches out your ankles nicely and also helps you develop a correct and defined dolphin kick