©
Morddyn: 01 Steromphala umbilicalis.
©
Morddyn: 02 Steromphala umbilicalis
©
Morddyn: 03 Steromphala umbilicalis
©
Morddyn: 04 Steromphala umbilicalis
©
Morddyn: 05 Gibbula umbilicalis.
©
Morddyn: 06 Steromphala umbilicalis.
©
Morddyn: 07 Steromphala umbilicalis
©
Morddyn: 08 Steromphala umbilicalis
©
Morddyn: 09 Steromphala umbilicalis
©
Morddyn: 10 Steromphala umbilicalis. Radula action 3.
©
Morddyn: 11 Steromphala umbilicalis. Mouth.
©
Morddyn: 12 Steromphala umbilicalis. Radula action 1.
©
Morddyn: 13 Steromphala umbilicalis. Radula action 2.
©
Morddyn: 14 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 15 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 16 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 17 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 18 Steromphala umbilicalis. H. 6mm, B.11.5mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 19 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 20 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 21 Steromphala umbilicalis. H. 6mm, B.11.5mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 22 Steromphala umbilicalis. H. 6mm, B.11.5mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 23 Steromphala umbilicalis. H. 6mm, B.11.5mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 24 Steromphala umbilicalis. H. 7.9mm, B. 12mm. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 25 Comparison of medium-sized S. umbilicalis and S. cineraria. Aug. 2013. Menai Strait, Wales.
©
Morddyn: 26 Comparison small S. umbilicalis and S. cineraria.
©
Morddyn: 27 Comparison small G. umbilicalis and G. cineraria.
©
Morddyn: 28 Steromphala umbilicalis. July 1975. Loch Eriboll.
©
Morddyn: 29 Steromphala umbilicalis adult 16.4mm wide (N. Scotland) and (on right) young Phorcus lineatus 14mm wide (Weymouth).
©
Morddyn: 30 Steromphala umbilicalis shedding ova. February 2013. Menai Strait.