Mysterious find on Cornish beach!

Mysterious find on Cornish beach!

Observation - Mysterious find on Cornish beach! - UK and Ireland. Description: Found washed up on the beach in Cornwall. It appeared to be alive when I found it- it was moving the legs/ tentacles/ bits inside the claw like structures. They were semi soft- felt like a human nail. I saw a couple more identical creatures nearby.

Found washed up on the beach in Cornwall. It appeared to be alive when I found it- it was moving the legs/ tentacles/ bits inside the claw like structures. They were semi soft- felt like a human nail.
I saw a couple more identical creatures nearby.