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  • 9 Gastropod anatomy. Male Littorina fabalis, restrained by clothes peg (hidden by editing).

    9 Gastropod anatomy. Male Littorina fabalis, restrained by clothes peg (hidden by editing).
  • 8 Gastropod anatomy. This design of clothes peg has three points where shells may be gripped, and it has no metal parts to rust. Central peg painted black to prevent colour reflection in photography.

    8 Gastropod anatomy. This design of clothes peg has three points where shells may be gripped, and it has no metal parts to rust. Central peg painted black to prevent colour reflection in photography.
  • 7 Gastropod anatomy. Male Peringia ulvae restrained by plasticine. Large penis visible protruding from shell behind head.

    7 Gastropod anatomy. Male Peringia ulvae restrained by plasticine. Large penis visible protruding from shell behind head.
  • 6 Gastropod anatomy. Unrestrained Peringia ulvae turning from lying with shell aperture facing up. Head and yellowish hooked penis exposed for a few seconds during the turn.

    6 Gastropod anatomy. Unrestrained Peringia ulvae turning from lying with shell aperture facing up. Head and yellowish hooked penis exposed for a few seconds during the turn.
  • 5 Gastropod anatomy. Juvenile Buccinum undatum crawling on underside of inverted petri dish. Holes for escape of trapped air.

    5 Gastropod anatomy. Juvenile Buccinum undatum crawling on underside of inverted petri dish. Holes for escape of trapped air.
  • 4 Gastropod anatomy. Rissoa parva, 2.5mm long, crawling on undersurface of water.

    4 Gastropod anatomy. Rissoa parva, 2.5mm long, crawling on undersurface of water.
  • 2 Gastropod anatomy. Transparent sole of Janolus hyalinus on undersurface of water.

    2 Gastropod anatomy.  Transparent sole of Janolus hyalinus on undersurface of  water.
  • 13 Gastropod anatomy. Nucella lapillus male, restrained by clothes peg.

    13 Gastropod anatomy. Nucella lapillus male, restrained by clothes peg.
  • 12 Gastropod anatomy. Littorina littorea male, restrained by clothes peg.

    12 Gastropod anatomy. Littorina littorea male, restrained by clothes peg.
  • 11 Gastropod anatomy. Littorina littorea female, restrained by clothes peg.

    11 Gastropod anatomy. Littorina littorea female, restrained by clothes peg.
  • 10 Gastropod anatomy. Littorina littorea female, restrained by clothes peg.

    10 Gastropod anatomy. Littorina littorea female, restrained by clothes peg.
  • 1 Gastropod anatomy. Side view of Berthella plumula.

    1 Gastropod anatomy.  Side view of  Berthella plumula.
  • 03 Gastropod anatomy. Active Gibbula magus.

    03 Gastropod anatomy. Active Gibbula magus.
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Marinvert

Photographic guide to the identification and biology of European marine invertebrates

Marinvert
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