a male marsh frog floats side on to the camera on the surface of a marshy pool above a filamentous green algae mat, side on to the

amphibian animal aquatic brown calm chytridiomycosis color cute england environment eye eyes fauna feet floating freshwater frog green head invasive kingdom lake leaf legs male marsh natural nature nonnative outdoor pelophylax plant pond rana reserved ridibundus spots summer surface swamp swimming tranquil underwater united water webbed weed wet wild wildlife