A tiny Six-armed Sea Star (Leptasterias sp.) photographed in Mendocino County on 31 May 2025. This juvenile sea star was only ~3-4 mm across from arm tip to arm tip.
If you look carefully, you can see some of its tube feet extending away from its arms. And the small red eye spots at the tips of the three arms in the foreground are also visible.
Rather than releasing eggs into the water column, Leptasterias broods its embryos and the young sea stars crawl away from the adult. Back in 2012, I shared photos of an adult Leptasterias with its brood of embryos and an image of an adult with many juveniles in the surrounding area (it's likely the juveniles recently crawled away from the adult). To review those photos, check out the post called "Four brooders in one" on 29 February 2012.
P.S. Thanks for the great photo, Eric!