21 Onchidoris bilamellata

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21 Onchidoris bilamellata

Adult on left with spawn masses, resembling everted, high, white collars.
Mersey Estuary, England. Late January, 2010, when land temperature was below freezing. Hundreds were spawning on the shore.

Imprint

Photographic guide to the identification and biology of European marine invertebrates

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