30.2 Rissoa membranacea.

30.2 Rissoa membranacea.

The capsule is a low dome with a central lanceolate opening (1) covered by a membrane that ruptures when the eggs hatch so the young can escape. Egg capsules laid in captivity on Zostera leaf by specimens from ELWS, Orkney, Scotland. April 2018. Leg. I. Williamson.

marinvert.senckenberg.science/image-browse/