Chris Mattison / Gutweed (Enteromorpha intestinalis) growing in shallow rock pool, Isle of Ulva, Mull, Scotland, June.
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Philippe Clement / Gutweed / grass kelp (Enteromorpha intestinalis / Ulva intestinalis) washed ashore on Normandy coast, France, September
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Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) hiding in a rockpool among Mussels (Mytilus edulis) and Gutweed (Ulva / Enteromorpha intestinalis), near Falmouth, Cornwall, UK, August.
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Nick Upton / Gutweed (Ulva intestinalis / Enteromorpha intestinalis) growing in a rockpool high on the shore, with buoyant tubular fronds filled with air standing upright, Wembury, Devon, UK, August.
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Nick Upton / Rockpool high on a rocky shore fringed with Gutweed (Ulva intestinalis / Enteromorpha intestinalis), Wembury, Devon, UK, August.
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Nick Upton / Broad-clawed porcelain crab (Porcellana platycheles) hiding behind Gutweed (Ulva / Enteromorpha intestinalis) in a rockpool alongide a Flat / Purple top shell (Gibbula umbilicalis) and a Limpet (Patel...
01402760
Nick Upton / Gutweed (Ulva intestinalis / Enteromorpha intestinalis) growing in a rockpool high on the shore, with buoyant tubular fronds filled with air standing upright, Wembury, Devon, UK, August.
01402763
Nick Upton / Rockpool high on a rocky shore fringed with Gutweed (Ulva intestinalis / Enteromorpha intestinalis), with grassy cliffs rising behind it, Wembury, Devon, UK, August.
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Nick Upton / Gutweed (Ulva intestinalis / Enteromorpha intestinalis) growing in a rockpool high on the shore, with buoyant tubular fronds filled with air standing upright, Wembury, Devon, UK, August.
01271974
Robert Thompson / Knotted wrack {Ascophyllum nodosum} and Sea lettuce {Ulva intestinalis} exposed at low tide, Ballyhenry Point, Strangford Lough, County Down, Northern Ireland, UK, August
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Alex Mustard / Black-lined periwinkle (Littorina compressa) on a bed of gutweed (Ulva intestinalis). St Brides Haven, Pembrokeshire, Wales, United Kingdom. British Isles. Irish Sea.
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Philippe Clement / Gutweed / Sea lettuce (Ulva intestinalis / Enteromorpha intestinalis) green alga washed on rocky beach, Normandy, France, June
