Early stage juvenile, 5 mm long, has translucent, pearly white interior showing the brown marks of the exterior. Partly formed and tilted septum (1). Portland Harbour, England, April 2012.
Early stage juvenile, 5 mm long, has translucent, pearly white interior showing the brown marks of the exterior. Partly formed and tilted septum (1). Portland Harbour, England, April 2012.