Sole of Cerithiopsis tubercularis; circular opening of posterior pedal gland near centre. On fine red seaweed growing on stone among muddy sand. Menai Strait, Wales, Aug. 2010.
Sole of Cerithiopsis tubercularis; circular opening of posterior pedal gland near centre. On fine red seaweed growing on stone among muddy sand. Menai Strait, Wales, Aug. 2010.
Sole of Cerithiopsis tubercularis; circular opening of posterior pedal gland near centre. On fine red seaweed growing on stone among muddy sand. Menai Strait, Wales, Aug. 2010.