APHOTOMARINE
An educational resource dedicated mainly to the photography
and diversity of marine life that can be found in coastal waters
and intertidal areas of Great Britain and Ireland by David Fenwick.
Ascophyllum nodosum (Linnaeus) Le Jolis, 1863 - Knotted or Egg Wrack (Brown seaweed images)
Scroll down and rollover titles to change screen image or click on title to view image.
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- on harbour wall 1
Ascophyllum nodosum
- on harbour wall 1
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- on harbour wall 2
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- on harbour wall 3
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- on harbour wall 4
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- on rocky middleshore 1
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- on rocky middleshore 2
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- fronds 1
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- with Vertebrata lanosa 1
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- frond close-up 1
Knotted Wrack or Egg Wrack
Ascophyllum nodosum
- with Lepas pectinata 1
A common seaweed, usually found across the middleshore on sheltered rocky coasts and in estuaries across the region. May also be found washed up on the strandline of beaches having drifted across the Atlantic on the Gulf Stream, these pieces may have stalked barnacles growing on them, barnacles such as Dosima fascicularis, the Buoy Barnacle; and Lepas pectinata. Here in the UK a hydroid, Dynamena pumila; and a red seaweed, Vertebrata lanosa synonym Polysiphonia lanosa may be see growing epithitically on this seaweed.
Please use the browsers BACK button to return to this page on clicking the links above.
Species photographed at many locations across the region; these include the Lynher Estuary, off Point Field, Churchtown Farm Reserve at Saltash; and at Marazion, near Penzance, Cornwall.
Scientific and European Names:
Ascophyllum nodosum, Knotted Wrack, Egg Wrack, Asco, Sea Whistle, Knotentang, Knotswier, Goemon noir, Alga nudosa.
AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms.
The main objective of this website is in furthering environmental awareness and education through the medium of photography. To increase awareness and access to the wildlife of the region and help
people find and identify it. Sometimes the difference between species is obvious but many species can only be determined by observing microscopic characteristics that are specific to any one species.