I'm not a regular here but thought I could glean some info from the group.

I have a pond in yard that is about 140'x50'x4'deep. It gets little or
no care except we do have add fresh water to it weekly.

It has a growth in it that I have not seen before, pond is 25 yrs. old.
The growth looks like small rose colored cauliflower heads about a 1/4"
in diameter. Any help would be greatly appreciated. Thanks, Dan