Clear jelly with stars
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the other things on the image inclide a unidentified sea squirt (top righta0 , the shells of a mussel and the broken tubes of a polychaete (probably Sabellaria spinulosa)
... still none the wiser (please forgive a landlubber) but isn’t nature pretty!
Botryllus is a colonial ascidian or sea squirt. Animals that are often jelly -like and sit attached to the seafloor where they filter their food from the water around them. Although this makes the sound pretty primative, they are actually quite advanced and have a larval stage that is like a tadpole and has a primitive back-bone. Because of this, they are classified within the phylum Chordata....the same one that mammals belong to.
I hope this helps. There are plenty of inernet sites where you can find out more about these fascinating animals.
... for the explanation Mike.
They certainly are very interesting indeed.
Lat/Lng: 46.3391, -1.4343
Rock pools exposed at low tide