Found in my photos... I made several incidental observations of this beautiful algae, even though I was actually looking for it, inspired by @dlbowls many observations of the species. Their first, https://www.inaturalist.org/observations/8824322, triggered interesting comments including from @susanhewitt.
For its size in relationship to other tide pool organisms, see https://www.inaturalist.org/observations/66614727.
Found in swimming pool
found under a rock. very small 5mm at the most
@dlbowls, could this be the larval “skin” of an Ashy Gray Lady Beetle from which it emerges, like in your obs https://www.inaturalist.org/observations/3450022? Found on the leaf of a Common Sunflower.