Moss, fern, weird plant growth in pond.

Can you take a look at this and tell me if you've seen it in your pond? http://davesgarden.com/community/forums/fp.php?pid=3906224

Trying to figure out if I should remove it pronto - as one of the suggested IDs is listed on the USDA quarantine list for CA.

Thanks.

I believe that's some kind of moss/weed. Can't tell you which, but I see it all the time. Just peel it off (comes off easily). I wouldn't have it in my pond...but that's just me.

You have the correct ID on the thread, it's azolla.