Found this at high tide mark on Marazion beach near Penzance. Very jelly like to touch with long tendrals and a central bit.
No identification made yet.
No interactions present.
They look a bit like squid eggs?
My gut reaction when I saw this image was squid eggs. So I would agree with the above two comments.
I am 'stalking' you Sue!
I think you should add the ID - it may not get much attention but if you also change it to Inverts and apply (observed in) Marine it will attract a few of us here
Lat/Lng: 50.12447, -5.47792
OS grid ref: SW515307