Thanks for the info. I already have an excellent facility for practicing and taking classes. I'll have to ask the swim instructor in my class that i'm currently in what I'm doing wrong.

From searching the Internet though, I suspect I have runner's kick (I'm mainly a runner). I don't know about others, but I can't point my feet straight down. If I sit on my heals (like in a child's sitting position), there's about 1cm of gap between the floor and the front part of my ankle. It's even bigger on my other foot.