Yes I have been removing some (when not covered in ice). Theres a creek on the backside of my places. I have taken lots of them (maybe 500) and put in the pond. Most of those were only 1/2 - 1 inch long. So who knows if they had a chance to survive or not. My pond is 12 years old now. It started out as about a 1/4 acre or so. Deepest part is the original pond. If I have to I can drain it down a few feet and burn that shit off. Not sure if that's a good idea or not but an option.