Dorsal (left) and ventral (right) faces of dorsoventrally flattened head. Cephalic tentacles (1). Circular rhynchostome (false mouth) (2) with slit which opens for eversion of the pleurembolic proboscis. There is no permanently external snout.
Left: Portland, Dorset, England, April 2012. Right: Menai Strait, Wales, February 2013.
: flic.kr/p/2oiGpnC
Sets of OTHER SPECIES:
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