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.
Sargassum muticum (Yendo) Fensholt, 1955 - Wireweed or Japweed - An invasive non-native species
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Wireweed or Japweed
Sargassum muticum
- reproductive parts 1
Sargassum muticum
- reproductive parts 1
Wireweed or Japweed
Sargassum muticum
- reproductive parts 2
Specimen above found in a middleshore pool at Battery Rocks, Penzance, Cornwall, 30.07.18.
Wireweed or Japweed
Sargassum muticum
- INNS invasive non-native species covering seabed 1
Wireweed or Japweed
Sargassum muticum
- INNS invasive non-native species covering seabed 2
Wireweed or Japweed
Sargassum muticum
- INNS invasive non-native species covering seabed 3
Wireweed or Japweed
Sargassum muticum
- INNS invasive non-native species covering seabed 4
Wireweed or Japweed
Sargassum muticum
- INNS invasive non-native species blocking light 1
Wireweed or Japweed
Sargassum muticum
- INNS invasive non-native species blocking light 2
The images above were taken west of the reef at Hannafore, Looe, Cornwall, 14.06.22.
Wireweed or Japweed
Sargassum muticum
- in middleshore pool 1
Specimen above found in a middleshore pool at Chimney Rocks, Penzance, Cornwall, 11.04.12.
Wireweed or Japweed
Sargassum muticum
- patch out of water 1
Specimen above found on the shore at Wherry Rocks, Penzance, Cornwall, 13.08.18.
Wireweed or Japweed
Sargassum muticum
- in lowershore pool 1
Wireweed or Japweed
Sargassum muticum
- in lowershore pool 2
Wireweed or Japweed
Sargassum muticum
- habitat 1
Specimens above were found in a lowershore pool at Albert Pier reef, Penzance, Cornwall, 13.08.18.
Wireweed or Japweed
Sargassum muticum
- in lowershore pool 3
Specimen above was found in a pool on the lowershore at Porthpean Beach, St. Austell, Cornwall, 30.03.10.
Wireweed or Japweed
Sargassum muticum
- in middleshore pool 2
Wireweed or Japweed
Sargassum muticum
- in middleshore pool 3
Wireweed or Japweed
Sargassum muticum
- in middleshore pool 4
Wireweed or Japweed
Sargassum muticum
- in middleshore pool 5
Wireweed or Japweed
Sargassum muticum
- washed ashore 1
Wireweed or Japweed
Sargassum muticum
- washed ashore 2
Specimens above were found on the shore at Spit Point, Par, near St. Austell, Cornwall, 13.01.09 and 12.07.10; also at Par Beach, near St. Austell, Cornwall, 16.07.10.
A very common and widespread non-native species, found widely across the region. However it does provide good for a range of Stalked Jellyfish.
Scientific and European Names:
Sargassum muticum, Japweed, Japanese seaweed, Japanischer Beerentang, Japans bessenwier, Sargasse japonaise, Sargazo japanes.
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.