Green algae - filamentous - Mougeotia?

Green algae - filamentous - Mougeotia?

Observation - Green algae - filamentous - Mougeotia? - UK and Ireland. Description: An area of field has not dried up since late last summer. It now has a growth of what I take to be green algae; presumably the bubbles are oxygen from photosynthesis. Can anyone identify the algae or tell me what further information would help get an I

An area of field has not dried up since late last summer. It now has a growth of what I take to be green algae; presumably the bubbles are oxygen from photosynthesis.

Can anyone identify the algae or tell me what further information would help get an ID?

Edit: title changed and further identification added.