Recording Marine Life

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Records of Sargassum muticum

Number seen/Abundance Date Location Comments Recorded by
P 2003-05-26 Firestone Bay
Firestone Bay, Plymouth, Devon
Lots. John Bleach
P 2003-05-24 Perranuthnoe Beach
Perranuthnoe Beach, all along beach
seen on beach, detached Patricia Johnstone
P 2003-06-25
Trevone/Newstrain Beach - flat slate rock outcrop
Lots, in nearly every rock pool investigated. St Issey School Group
C 2002-05-11
Batten Bay, nr Plymouth
Common in lower shore rock pool BTCV/ MilleniumVolunteers
P 2003-05-04
Below the sea-front parking at New Polzeath in at least 2 pools on the rocky shore here near to the
Attached. Two clumps seen. Currently relatively small clumps. Peter Barfield
F 2004-04-07
Helford passage + Bar beach, Helford River, Cornwall.
In low rockpools and on low sand flats Ruth Williams
P 2004-03-25
Kircolm, Loch Ryan (Dumfries and Galloway)
1st record of species in Scotland. Seen scattered along the shore. Variety of sizes seen. Scottish Natural Heritage Surveyors
100 indivi 2004-03-25
Cairnryan, Loch Ryan (Dumfries and Galloway)
1st record of species in Scotland. Seen along 50m stretch of shore. Variety of sizes seen. Photos taken. Scottish Natural Heritage Surveyors
P 2004-03-25
Salchrie, Loch Ryan (Dumfries and Galloway)
1st record of species in Scotland. Seen scattered along the shore. Variety of sizes seen. Scottish Natural Heritage Surveyors
O 2004-05-08
Jennycliff Bay, near Plymouth. Rocky shore, alongside sandy/gravelly beach.
Occassional growing in small clumps in mid-shore pools Seashore Safari
C 2004-06-05
Wembury Beach, South Hams, Devon. Rocky shore with some sandy patches
Common, mid sized rafts in rockpools. high - low shore. Seashore Safari
20 2004-07-03 Coombe Martin Bay
Coombe Martin Bay, Devon. Rocky platform adjacent to muddy/sandy/shingly beach. Large man made pools at top of beach.
In pools Barbara Haddrill
P 2004-06-18 Croyde Beach
Croyde Beach, west facing rocky platforms north of sandy bay. Midshore area, rock rocks with frequent pools, shallow and deep. Sunny & cloudy, strong breeze site 2
In rockpools 2% coverage (5m x 5m area) David Butt (Brauton School)
P 2004-06-18 Croyde Beach
Croyde Beach, North Devon. West facing rocky platform north of sandy bay. Low shore area, steep & rugged rock with deep pools & gullies. Site 3.
In pools 5% coverage (5m x 5m area) David Butt (Brauton School)
C 2004-08-03 Snapes Point
Snapes Point - sheltered shore
All too common Nigel Mortimer
O 2004-08-14 Padstow
Near Padstow - rocks at edge of sandy beach and mouth of River Camel.
Occassional Filling some pools. Appeared to be in poor health in some pools. Jack Sewell
O 2004-08-19 Batten Bay
Batten Bay, near Mountbatten
Occassional in rockpools Seashore Safari
Abundant 2001-08-22 Church Reef
Church Reef, Wembury, Devon
Found in rock pools. Will Rayment
A 2005-03-12 Firestone Bay
Firestone Bay, Plymouth Sound
Seen in rockpools Seashore Safari
100 2005-06-10
East coast of Great Cumbrae Island. Between the 'Wishing Well' and Keppel pier
Frequent (>100 ) specimens in lower littoral - on cobble/pebble substrate. David Donnan
55 2005-06-22 Batten Bay
Batten Bay, Plymouth Sound
Abundant Inigo Urrutia
C 2005-06-27
Saltdean, east of Brighton, East Sussex
Common, starting to dominate in rockpools on chalk bedrock in middle/upper zone. Kate Cole
A 2005-06-14
Birling Gap, near Eastbourne, East Sussex
Abundant, completely dominating rock pool on chalk platform near the top of the shore. Kate Cole
P 2005-06-25
Portwrinkle, Whitsand Bay
Seen in rockpools Judith Oakley
P 2005-05-24 Mothecombe Beach
Mothecombe Beach near Erme Estuary, South Devon
Seen by group 8, years 4-6, Fiona, Amy, Anna, Sophie and Georgina Holbeton School
P 2005-05-24 Mothecombe Beach
Mothecombe Beach near Erme Estuary, South Devon
Seen by group 6, year 3,5&6, Jack, Isaac, Tom Rogers, Francis and Anthony Holbeton School
A 2005-07-05
Goodrington sands, Torbay
abundant in rockpools Judith Oakley
Many 2005-08-28
Old Harry's Rock, Studland, Dorset
Near Old Harrys rock in shallow water Sam Parr
some 2005-10-04
Lynmouth shore west.
under rocks Deddington School
Few 2005-12-07
e.g. South coast of Lindisfarne, near the harbour.
On its own
Present 2006-03-01
Intertidal below Hen Cliff, Kimmeridge
Steve Trewhella
abundant 2006-06-27
Jennycliff Beach, Plymouth
In rockpools Yealmpton Primary School
abundant 2006-06-27
Jennycliff Beach, PLymouth
In rockpools Newton Ferrers Primary School
Lots 2006-06-05
Choking mid shore pools and also some stands just offshore when snorkelling

Large plant, 1m long floating on surface in midde of Loch
3 2006-04-25
Chesil cove
Si Parker
10 2006-04-29 South coast of Lindisfarne near the harbour.
Many with eggs Cat Ridout
None 2007-01-23
Branscombe Bay, Devon
Milly Hatton-Brown
present 2007-03-10
brandy bay kimmeridge
Steve Trewhella
Common 2007-05-15 Blackstone Rocks
Blackstone Rocks
Cat Ridout
Common 2007-05-15 Blackstone Rocks
Blackstone Rocks
Cat Ridout
Common 2007-05-15 Blackstone Rocks
Blackstone Rocks
Cat Ridout
5 2007-06-03
Cellars Beach, Yealm estuary
small plants in rockpools Jon Parr
Jayne Evans
Common in certain areas 2007-07-20
Branscombe beach
None was found during the time search though on other areas of the shore it was common in the rockpools. Milly Hatton-Brown
Frequent 2007-07-31 Blackstone Rocks
Blackstone Rocks, Wembury.
Cat Ridout
Several plants 2007-08-19
Sandy bay inshore of Davaar Island, Campbeltown, Argyll
Plants up to 2 metres long attached to cobbles on sand. Removed to Dunstaffnage Marine Lab for analysis Robin Harvey
abundant 2007-09-30
Wembury Point, near Plymouth
Large stands, covering seabed on North side of Mewstone. Jack Sewell
rarer than normal 2007-10-26 Batten Bay
Batten Bay
Small individual stems (<30cm) in pools on lower shore. Jack Sewell
present 2008-01-12
Mount Batten, Plymouth
Seashore Safari
Several plants >1m long 2007-08-19
Campbeltown Loch near Davaar Island, Argyll & Bute
Attached to small cobbles on sand. As many as possible were removed for identification/destruction Robin Harvey
Not Found 2008-04-18
Mount Batten N50:21:25 W4:07:40
Rockpools Seashore Safari
abundant 2008-05-21 Polzeath
Polzeath north
in roughly third of lower shore rock pools Paula Ferris
lots 2008-06-22
Yealm Estuary
Large bank just off rocky beach in estuary. Exposed at low tide. Jon Parr
Common 2008-07-01 Hannafore beach
South West coast of England. south east cornwall, hannafore beach, Looe.
Extremely common and in most rockpools. All fronds about 0.75-1m tall. Mid-lower shore. Exposed rocky shore. Amelia Bridges
one attached plant 2008-07-09
Carradale, East Kintyre peninsula, Argyll & Bute
approx 50 cm long Robin Harvey
Two plants in different locations 2008-07-09
Rocks at Westport, Kintyre, Argyll & Bute
One plant completely removed; the second was in deep water, c. 60 cm long and the top 25 cm were snapped off. Shore at Roneachan, a few miles north was checked but no Sargassum found there. Robin Harvey
frequent 2008-07-30
Porth Hellick, St Mary's, Isles of Scilly
Rock pool Larissa Paver
abundant 2008-07-30
Porth Hellick rocky shore, St Mary's Isles of Scilly
rock pools Larissa Paver
5 plants 2008-08-23
Skipness beach, Kintyre, Argyll
One growing in a rockpool. Others in a sandy lagoon attached to pebbles. All removed to above the high water mark. Robin Harvey
2008-09-28 Battery Rocks
Battery Rocks, Below Jubalee pool, Penzance
Frequent. Rock pools of mid to low shore Larissa Paver
occasional 2008-12-27 Penzance
Battery rocks, sourth of Jubilee Pool, Penzance
Larissa Paver
Very abundant 2008-08-29 North side of Ynys Lochtyn
Cardigan Bay
In one large, deep rockpool, dying back at end of season Ben Sampson
3 2009-05-24 Stackhouse Cove, Penzance
In gulleys and under overhangs at Stackhouse Cove during a low of 0.9m
In rockpool Larissa Paver
Uncommon 2009-06-20 Hastings
Rocky shore below East Hill with some sand patches, shingle, pebbles and boulders. There is also a rocky \"platform\" mid-low shore with many crevices and small rock pools. Other species certainly present including some hydroids, bryzoans, brown flatworms, probable Bullhead and other fish
Patches in rock pools Nigel Sawyer
Occasional 2009-06-27 Torquay Marina
All species found on the pontoon floats of Torquay Marina
Wireweed Holly Latham
Common 2009-07-04 Brixham Marina
All species found on the pontoon floats in Brixham Marina
Occuring in fairly small patches Holly Latham
Approx. 9 clumps closely bunched 2009-07-12 Bellochantuy
Natural harbour among rocks South of Bellochantuy village
Anchored to bottom. Also in clumps drifting off shore. These clumps seriously fouled my outboard engine. Angus Mcallister
Uncommon 2009-07-05 Cow Gap, Eastbourne
Boulder, rocks and stone leading down to sea, some sandy/gravel patches, with small rock pools and some finer sediment. Un identified Spirobius sp, Sandhoppers and worm (prob Hermanthoe impar - picture sent via post) as well as seaweeds
Dominant seaweed in some rock pools Nigel Sawyer
Common 2009-07-18 Eastbourne, below Pinnacle
Mainly soft bedrock with pools and some pebble and sandy areas. Storms previous day and persistant strong wind. Some unidentified hydroids (?Obelia) also found 2 metre low tide so water level fairly high
Some rock pools full of this alien species Nigel Sawyer
>20 2009-07-26 Kildonan, Arran
Almost flat sandstone pavement with occasional higher dykes. boulders and sandy lagoons.
In shallow sandy 'lagoons' at low water with Zostera marina. Large plants Robin Harvey
Abundant 2009-08-07 isle of muck
muck harbour
Japweed all over muck shore Laura Mandleberg
1 string per 10m of strandline 2009-07-01 Cleveleys
Cleveleys at vue to rossall school
Still green Kathryn Turner
Common 2009-08-21 Cow Gap near Eastbourne
Beach consisting mainly of bolders, cobbles, pebbles with patchs of clay and sand.
Many pieces washed up Nigel Sawyer
Uncommon 2009-08-31 Herne Bay Kent
Below \"soft cliffs\" mainly sandy with some pools and bedrock of sandy clay. Some boulders on the shore often seaweed covered
Clumps were washed up along the shore Nigel Sawyer
Occasional 2009-09-07 Mousehole, Cornwall
Rock platform just east of village, below \\\'bathing\\\' pool set into the rocks.
In rock pools on middle shore Larissa Paver
Common 2010-04-21 Cow Gap, Beachy Head Sussex
Rock pools and sandstone area. Area of sand and some mud/ sand patches amongst the boulders and other rocks. Jaera sp also seen. Pools near the cliff had the seaweed Dumontia incrassata and shells of Mactra stultorum were also found (neither listed in DB)
Widespread in the more sheltered pools Nigel Sawyer
1 2010-04-25 Hope Gap, Seaford, Sussex
Low tide on chalk platform boulders, pebbles, with gulleys present lower on shore
One frond seen Nigel Sawyer
05/02/2011 Gyllyngvase Beach
Rocky shore to the left and right hand sides of the beach.
Kristie Wilkinson
1 frond 01/04/2008 West Mersea beach, Blackwater estuary, Essex
on beach Adrian Wood
1 large frond 24/06/2008 Martello Tower, Clacton, Essex
on beach Adrian Wood
Rare 03/04/2011 Bognor Regis
Following tide out. Strandline to tide line. Shingle to sand but with little washed up on sand. Many worm casts/ holes. Orange sponges also washed up. A single Pollachius sp (full size) was on the beach but too badly damaged to id to Pollock or COley (Gull attacked!)
One pieces seen washed up and two in pools under pier Nigel Sawyer
30 08/04/2011 Mount Edgecumbe
The rocky shore around the point of Mount Edgecumbe.
Bex House
Common 16/04/2011 Nothe Fort, Weymouth
Rocky shore below Nothe Gardens towards the Stone Pier. Some shells look more like Venerupis rhomboides than sengalensis. Some unidentified small shrimps/ prawns seen in wide crevices
Widespread in rock pools Nigel Sawyer
1 02/06/2011 Batten Bay
Rocky shore at Mount Batten
Marlin Beach Rangers
Uncommon 26/06/2011 Hope Gap, Sussex
Chalk platform with seaweed covering
At least 4 clumps of this algae seen. Certainly more common that last year but does not seem to be covering large areas at the moment Nigel Sawyer
Uncommon 10/07/2011 Hope Gap, Susex
Chalk platform with channels, flints and a seaweed covering (Pepper Dulse being dominant)
More found washed up on strandline Nigel Sawyer
Common 17/06/2012 Splash Point, Seaford
Chalk platform and shingle beach
Many washed up fronds Nigel Sawyer