the only yellow 1,the others "puffy & green".The many tiny snails I assume hydrobia species.
No interactions present.
The Locn should be the marsh N. of Weobley castle which is just W. of Llanrhidian
Can this be identified as Glaucus glasswort?
as the other two species occur in non-tidal brackish lagoons.
Bishop, M.J. 1976. Hydrobia neglecta Muus in the British Isles. J. moll. Stud. 42, 319-326.
Lat/Lng: 51.6004, -4.271
OS grid ref: SS428915
Llanrhidian sands, nr Weobley castle