17 Myosotella myosotis form denticulata.

17 Myosotella myosotis form denticulata.

Bubbles of air escaping from submerged pneumostome as water enters.
1: part of mantle cavity still occupied by air.
2: water in mantle cavity.
The rectum and part of the intestine (3) run along the rear edge of the roof of the mantle cavity to the anus.
Shell height 3.5 mm. Specimen newly immersed in water. Menai Strait, Wales. April 2018.

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