A naturally occurring mossy lake. Green lake weed, algae and dirt floating on the surface of wavy lake water. The lake floor is completely covered with mosses. Freshwater plants, reeds, water algae. Natural ecosystem and habitat. Alga lichen underwater kelp forest seaweed hydrophyte. Pond, pool, puddle, slough. Aerial footage 4K UHD 3840×2160 30p.