1. Juvenile Facelina bostoniensis. Length 5mm. Interior white cnidosac at tip with small patch of white surface pigment. No other white pigment splashes on cerata. No iridescence. Eyes behind rhinophores. Mersey Estuary. September 2010.
2. Juvenile Facelina bostoniensis. Length 5mm. Interior white cnidosac at tip with small patch of white surface pigment. No other white pigment splashes on cerata. No iridescence. Eyes behind rhinophores. Mersey Estuary. September 2010.

Juvenile Facelina bostoniensis. Length 5mm. Interior white cnidosac at tip with small patch of white surface pigment. No other white pigment splashes on cerata. No iridescence. Eyes behind rhinophores. Mersey Estuary. September 2010.