ewest, thanks for the reply and the link. What I'm seeing in my pond doesn't resemble bryozoa, it looks more like the artificial grass one sees in an Easter Basket, but finer in texture. The masses are free floating at the surface or just below it. I've owned this pond since 1980 and never observed what ever this is before.
Thanks again for the link on bryozoa, it's an interesting read about something I've never seen.
