Yeah, but I bet you didnt do it with knees bent at 90 degrees like the scuba "frog kick"- otherwise your feet would be out of the water, lol
The way I was taught to swim breast stroke, the kick was pretty much exactly the same as a frog on the surface of the water - you bend, then extend your legs so they are almost straight (take a look at
http://www.breaststroke.info/santos-part2.htm)
The scuba "frog kick", you don't straighten your legs at all, they stay bent (see
http://www.northerntechdiver.com/gallery/train2002/train2002-2.php for a pic) and you just move your ankles and therefore, fins.
lets face it.. frog kick isn't really a "frog kick" - in the sense of swimming, it's more like a scull/flick of the ankle. Saying you did a scuba frog kick in the pool while snorkling and therefore it's completely straightforward and natural is a bit of a stretch.
