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  • 53 Patella ulyssiponensis album. COMPARISON image of P. vulgata, shell-length 46mm, that might be mistaken for high profile P. ulyssiponensis.

    53 Patella ulyssiponensis album. COMPARISON image of P. vulgata, shell-length 46mm, that might be mistaken for high profile P. ulyssiponensis.
  • 52 Patella ulyssiponensis. Shell length 40.5mm. North Yorkshire. September 2014.

    52 Patella ulyssiponensis. Shell length 40.5mm. North Yorkshire. September 2014.
  • 51 Patella ulyssiponensis. Shell length 39.5mm. Interior of shell, backlit on right; thinnest/brightest on horseshoe-shaped pedal-retractor muscle scar. Lleyn, Wales. October 2015. Leg. S. Payne.

    51 Patella ulyssiponensis. Shell length 39.5mm. Interior of shell, backlit on right; thinnest/brightest on horseshoe-shaped pedal-retractor muscle scar. Lleyn, Wales. October 2015. Leg. S. Payne.
  • 50 Patella ulyssiponensis album. Comparison image of P. vulgata. Menai Strait, Wales. March 2010.

    50 Patella ulyssiponensis album. Comparison image of  P. vulgata. Menai Strait, Wales. March 2010.
  • 49 Patella ulyssiponensis album. COMPARISON image of P. depressa. Shell length 31.7mm. South Devon. June 1996. Leg. coll. J.Light.

    49 Patella ulyssiponensis album. COMPARISON image of  P. depressa. Shell length 31.7mm. South Devon. June 1996. Leg. coll. J.Light.
  • 49 Patella depressa album. Image of high-domed P. vulgata for comparison. Length 55mm, height 40mm. Menai Strait. March 2010.

    49 Patella depressa album. Image of high-domed P. vulgata for comparison. Length 55mm, height 40mm. Menai Strait. March 2010.
  • 48 Patella ulyssiponensis album. Comparison image of P. depressa Shell length 30mm. Lleyn, Wales. September 2015.

    48 Patella ulyssiponensis album. Comparison image of  P. depressa Shell length 30mm. Lleyn, Wales. September 2015.
  • 48 Patella depressa album. Image of pallial tentacles on P. vulgata out of water for comparison. Menai Strait, Wales. September 2009.

    48 Patella depressa album. Image of pallial tentacles on P. vulgata out of water for comparison. Menai Strait, Wales. September 2009.
  • 47 Patella ulyssiponensis album. Comparison image of P. depressa. Shell length 30mm. Lleyn, Wales. September 2015.

    47 Patella ulyssiponensis album. Comparison image of  P. depressa. Shell length 30mm. Lleyn, Wales. September 2015.
  • 47 Patella depressa album. Image of pallial tentacles on P. vulgata for comparison. Menai Strait, Wales. June, 2013.

    47 Patella depressa album. Image of pallial tentacles on P. vulgata for comparison. Menai Strait, Wales. June, 2013.
  • 46 Patella ulyssiponensis album. Comparison image of P. depressa. Shell length 26mm. Lleyn, Wales. September 2015.

    46 Patella ulyssiponensis album. Comparison image of  P. depressa. Shell length 26mm. Lleyn, Wales. September 2015.
  • 46 Patella depressa album. Image of pallial tentacles on P. vulgata for comparison. Great Orme, Wales.

    46 Patella depressa album. Image of pallial tentacles on P. vulgata for comparison. Great Orme, Wales.
  • 46 Nucella lapillus. Hypobrachial gland mucus on cloth.

    46 Nucella lapillus. Hypobrachial gland mucus on cloth.
  • 45 Patella ulyssiponensis album. Comparison image of pallial tentacles of P. depressa. Shell length 30mm. Lleyn, Wales. September 2015.

    45 Patella ulyssiponensis album. Comparison image of  pallial tentacles of P. depressa. Shell length 30mm. Lleyn, Wales. September 2015.
  • 45 Patella depressa album. Image of pallial tentacles on P. vulgata for comparison. Great Orme, Wales.

    45 Patella depressa album. Image of pallial tentacles on P. vulgata for comparison. Great Orme, Wales.
  • 45 Nucella lapillus. Hypobrachial gland mucus on paper.

    45 Nucella lapillus. Hypobrachial gland mucus on paper.
  • 44 Patella ulyssiponensis album. COMPARISON image of interior of shells of P. vulgata. Lengths 7mm, 15mm, 20mm and 23mm. North Yorkshire. September 2014.

    44 Patella ulyssiponensis album. COMPARISON image of  interior of shells of P. vulgata. Lengths 7mm, 15mm, 20mm and 23mm. North Yorkshire. September 2014.
  • 44 Patella depressa album. COMPARISON images of foot on large adult P. ulyssiponensis. Shell lengths 39.6mm, 40mm and 40.5mm. North Yorkshire. September 2014.

    44 Patella depressa album. COMPARISON images of foot on large adult P. ulyssiponensis. Shell lengths 39.6mm, 40mm and 40.5mm.  North Yorkshire. September 2014.
  • 44 Nucella lapillus. Hypobranchial gland exposed to light and air.

    44 Nucella lapillus. Hypobranchial gland exposed to light and air.
  • 43 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata out of water for comparison. Menai Strait, Wales. September 2009.

    43 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata out of water for comparison. Menai Strait, Wales. September 2009.
  • 43 Patella depressa album. COMPARISON images of foot on adult P. ulyssiponensis. Shell lengths 20.3mm, 24.7mm and 26,8mm. North Yorkshire. September 2014.

    43 Patella depressa album. COMPARISON images of foot on adult P. ulyssiponensis. Shell lengths 20.3mm, 24.7mm and 26,8mm. North Yorkshire. September 2014.
  • 43 Nucella lapillus. Egg capsules. Menai Strait, Wales. March 2010.

    43 Nucella lapillus. Egg capsules. Menai Strait, Wales. March 2010.
  • 42 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata for comparison. Menai Strait, Wales. June, 2013.

    42 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata for comparison. Menai Strait, Wales. June, 2013.
  • 42 Patella depressa album. COMPARISON images of foot on young P. ulyssiponensis. Shell lengths 10.6mm, 12mm and 17mm. North Yorkshire. September 2014.

    42 Patella depressa album. COMPARISON images of foot on young P. ulyssiponensis. Shell lengths 10.6mm, 12mm and 17mm. North Yorkshire. September 2014.
  • 42 Nucella lapillus. 25mm high & 30.7mm high. From extremely exposed shore and extremely sheltered shore (6km apart) Hoy, Orkney, Scotland. July 1973.

    42 Nucella lapillus. 25mm high & 30.7mm high. From extremely exposed shore and extremely sheltered shore (6km apart) Hoy, Orkney, Scotland. July 1973.
  • 41a Nucella lapillus album. Prey species, Mytilus edulis. Juvenile 11.3mm long. Mouth of Mersey Estuary, England. July 2014.

    41a Nucella lapillus album. Prey species, Mytilus edulis. Juvenile 11.3mm long. Mouth of Mersey Estuary, England. July 2014.
  • 41 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata for comparison. Shell length 30.3mm. Great Orme, Wales.

    41 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata for comparison. Shell length 30.3mm. Great Orme, Wales.
  • 41 Patella depressa album. COMPARISON images of pallial tentacles on P. ulyssiponensis. Shell lengths A10.6mm, B12mm, C17mm and D40mm. North Yorkshire. September 2014.

    41 Patella depressa album. COMPARISON images of pallial tentacles on P. ulyssiponensis. Shell lengths A10.6mm, B12mm, C17mm and D40mm. North Yorkshire. September 2014.
  • 41 Nucella lapillus. Entrapped by Mytilus. Mouth of Mersey Estuary, England. July 2014.

    41 Nucella lapillus. Entrapped by Mytilus. Mouth of Mersey Estuary, England. July 2014.
  • 40 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata for comparison. Shell length 25mm. Great Orme, Wales.

    40 Patella ulyssiponensis album. Image of pallial tentacles on P. vulgata for comparison. Shell length 25mm. Great Orme, Wales.
  • 40 Patella depressa. Distribution in Britain.

    40 Patella depressa. Distribution in Britain.
  • 40 Nucella lapillus. Menai Strait, September 2009.

    40 Nucella lapillus. Menai Strait, September 2009.
  • 39 Pusillina inconspicua

    39 Pusillina inconspicua
  • 39 Patella ulyssiponensis. Gonads. North Yorkshire. September 2014.

    39 Patella ulyssiponensis. Gonads. North Yorkshire. September 2014.
  • 39 Patella depressa. Length 30.6mm. South Devon. Leg. J. Light.

    39 Patella depressa. Length 30.6mm. South Devon. Leg. J. Light.
  • 38 Patella ulyssiponensis. Odontophore and licker. North Yorkshire. September 2014.

    38 Patella ulyssiponensis. Odontophore and licker.  North Yorkshire. September 2014.
  • 38 Patella depressa

    38 Patella depressa
  • 37 Patella ulyssiponensis. Shell, epithelium of head, and all viscera removed, except buccal mass and radula. Shell length 24.7mm. North Yorkshire. September 2014.

    37 Patella ulyssiponensis. Shell, epithelium of head, and all viscera removed, except buccal mass and radula. Shell length 24.7mm. North Yorkshire. September 2014.
  • 37 Patella depressa – probable. Features intermediate between spp. Lleyn, Wales. October 2015. Leg. S. Payne.

    37 Patella depressa – probable. Features intermediate between spp. Lleyn, Wales. October 2015. Leg. S. Payne.
  • 36 Patella ulyssiponensis. Shell and all viscera removed, except radula, and buccal mass with epithelium. Shell length 24.7mm. North Yorkshire. September 2014.

    36 Patella ulyssiponensis. Shell and all viscera removed, except radula, and buccal mass with epithelium. Shell length 24.7mm. North Yorkshire. September 2014.
  • 36 Patella depressa – probable. Features intermediate between spp. Lleyn, Wales. October 2015. Leg. S. Payne.

    36 Patella depressa – probable. Features intermediate between spp. Lleyn, Wales. October 2015. Leg. S. Payne.
  • 35 Patella ulyssiponensis. Shell and mantle removed. Shell length 24.7mm. North Yorkshire. September 2014.

    35 Patella ulyssiponensis. Shell and mantle removed. Shell length 24.7mm. North Yorkshire. September 2014.
  • 35 Patella depressa. Shell length 28mm. Ventral face of male gonads. Lleyn, Wales. September 2015

    35 Patella depressa. Shell length 28mm. Ventral face of male gonads. Lleyn, Wales. September 2015
  • 34 Patella ulyssiponensis. Shell removed. Shell length 24.7mm. North Yorkshire. September 2014.

    34 Patella ulyssiponensis. Shell removed. Shell length 24.7mm.  North Yorkshire. September 2014.
  • 34 Patella depressa. Shell length 28mm. Overlying viscera removed to expose radula and male gonads. Lleyn, Wales. September 2015.

    34 Patella depressa. Shell length 28mm. Overlying viscera removed to expose radula and male gonads. Lleyn, Wales. September 2015.
  • 33 Patella ulyssiponensis. Shell removed. Shell length 31.2mm. North Yorkshire. September 2014.

    33 Patella ulyssiponensis. Shell removed. Shell length 31.2mm.  North Yorkshire. September 2014.
  • 33 Patella depressa. Radula after treatment in 10% solution NaOH to remove radular sac. Lleyn, Wales. September 2015.

    33 Patella depressa. Radula after treatment in 10% solution NaOH to remove radular sac. Lleyn, Wales. September 2015.
  • 33 Littorina compressa. Extremely exposed shore, Anglesey, March 2014.

    33 Littorina compressa. Extremely exposed shore, Anglesey, March 2014.
  • 32 Pusillina inconspicua COMPARE Pusillina sarsii

    32 Pusillina inconspicua COMPARE Pusillina sarsii
  • 32 Patella ulyssiponensis. Length 21.7mm. North Yorkshire. September 2014.

    32 Patella ulyssiponensis. Length 21.7mm.  North Yorkshire. September 2014.
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Marinvert

Photographic guide to the identification and biology of European marine invertebrates

Marinvert
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