02 Littorina saxatilis s.s. A12. Shell height 11.5 mm. Mature female. N. Yorkshire, September 2014.

02 Littorina saxatilis s.s. A12. Shell height 11.5 mm. Mature female. N. Yorkshire, September 2014.

1, 2 & 5 seen through translucent mantle.

1: large brood pouch containing brown shelled-embryos.
2: ctenidium (partly covered by brood pouch).
3: mantle edge.
4: head.
5: red-brown edged osphradium, tests quality of water approaching ctenidium (gill).
Specimen A.

No full account yet of this species.
marinvert.senckenberg.science/image-browse/7215763361…