03 Facelina bostoniensis

03 Facelina bostoniensis

Juvenile 5 mm long. Medial line on tail indistinct.
Oral tentacles half the length of the body. Clumps of cerata (1, 2, 3) are more discernible on juveniles as they have fewer cerata to obscure the view.
Juvenile oesophagus fawn (4). Stomach (5).
Mersey Estuary, England. September 2010.