21 Lacuna parva COMPARE Littorina obtusata & L fabalis

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21 Lacuna parva COMPARE Littorina obtusata & L fabalis

Littorina obtusata (top line) and L. fabalis:
Some colours like those of Lacuna parva. No columellar groove (chink, lacuna) or umbilicus .
Up to 15 mm high and 17 mm wide. Very large body whorl and small spire.
On apertural-view images, aperture occupies about 50% of area.
Menai Strait, Wales.

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Imprint

Photographic guide to the identification and biology of European marine invertebrates

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