Date not correct. Found on shoreline. Definite stem and attachment piece. Lumpy extension. Is it a sea squirt?
No interactions present.
Perhaps you could move this observation to the invertebrates group by selecting the 'edit' tab above the observation title and selecting the 'invertebrates' category from the correct drop-down. Then your observation can be more easily compared to other ones :)
Lat/Lng: 50.734472, -1.725197
OS grid ref: SZ194927