Juvenile Jellies washing ashore by the hundreds

I brought a few home and put them in my chilled jelly tank (birds were eating them on beach). They have no stripes. Maybe cause they are juvenile or maybe it has to do with the species. Just clear bells. I thought Long Beach only saw the species you are talking about. I am a part time scuba instrustor and dive the oil rigs alot and see those monster sized striped jellies (Pelagia noctiluca and/or Pacific nettly - Chrysaora fuscescens) but these don't seem to be them. I'm feeding them liquid reef food (live plankton & marine snow) and they are pumping like crazy in the tank. Don't know the species, that's why I kept them for my tank; in addition to saving them from the gulls.

Went out to the beach last night at midnight to see if there were more washing ashore but I found nothing. Only saw so many like that one other time about three years ago. My guess was that we had an algae bloom or water was warm.

Any ideas? My guess from researching is that they are Aurelia medusa's.