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sealord > Sark's Seashore Caves > Botryllus schlosseri Gouliot caves 120907 948 smg
sealord > This is a view of the south side of the peninsula of raised rock looking east towards the Quaine pole in Belle Greve Bay on Guernsey's east coast. This image shows the shore at low water during the afternoon spring tide of the 17 April 2007. The Laminaria ochroleuca kelps have been exposed. Thongweed, Himanthalia elongata, and red algae drape over bedrock and boulders. Patches of green Enteromorpha seaweed cover the ground. At the top of the image, in the middle, there is an outcrop of rock with an opening to a small cave in the centre which is where European sting winkles, Ocenebra erinacea, produced egg capsules during the spring tides of 17 and 18 April 2007. The yellow jacket of an ormer gatherer can be seen in the upper left-hand corner of the image. File No. BG 170407 7917 ©RLLord fishinfo@guernsey.net
sealord > This gully is by the Quaine pole (the top of the pole has a large letter 'Q') in Belle Greve Bay on Guernsey's east coast so I call it Quaine gully. It can only be reached by foot during an extreme low spring tide. This gully is home to clingfishes ( See http://sealord.smugmug.com/gallery/1984411#145028125 ), rocklings, squat lobsters (Galathea nexa), hermit crabs, ormers or abalone and many other occasional species such as the snapping prawn, Alpheus macrocheles (See http://sealord.smugmug.com/gallery/1984411#139498411 ). The walls of the gully are covered in crustose coralline algae and draped with thongweed, Himanthalia elongata and Laminaria kelps. The walls are also covered in a variety of sponges. Some of the crevices and holes in the gully walls contain Devonshire cup corals and sponges that avoid light. File No. BG 170407 7955 ©RLLord fishinfo@guernsey.net
sealord > During the large equinoctial spring tide of March 20, 2007 ormer (abalone, Haliotis tuberculata) gatherers search the Guernsey shore for the delectable mollusc. The brown kelps in the foreground are Laminaria ochroleuca. Low water was at about 0.2 metres above chart datum at about 1400. In the distance buildings line the Belle Greve Bay waterfront. File No. 200307 7470 ©RLLord fishinfo@guernsey.net
sealord > I believe the orange sponge in the centre of the image is Haliclona simulans. A painted top shell, Calliostoma zizyphinum, sits on the sponge (below the first 'O' in "photography". It grows on the south wall (shaded) of a gully near the Quaine rock pole in Belle Greve Bay on Guernsey's east coast. It was photographed with a Canon S80 compact digital camera at extreme low water during the big equinoctial low tide on 21 March 2007. File No. BG 210307 7550 ©RLLord fishinfo@guernsey.net
sealord > This image shows the lower shore of Belle Greve Bay after ormer (abalone) gatherers have turned over boulders looking for the elusive mollusc. All the pale boulders have been overturned and left upended. Many marine biologists visiting Guernsey from the UK have commented on the damage done to the shore by shore gatherers not returning boulders back to their original position after turning them over to look for the ormer. The tops of the boulders are covered by algae and particularly the pink crustose coralline algae, which issues pheromones which attract settling ormer, Haliotis tuberculata, larvae. The base of boulders are covered in many sessile invertebrate species including spirorbid tubeworms, bryozoan colonies, and ascidian colonies. When boulders and cobbles are turned over and not returned to their original position the algae that were growing on the top die and the invertebrate colonies from the base of the rock die too. The boulder quickly becomes colonised by opportunistic green algae and gradually over time and through succession a more complex community of species adheres to the boulders. If the boulders are turned over too often and the shore suffers too much disturbance macroscopic species diversity deceases. There is a hypothesis that intermediate disturbance allows for the greatest species diversity. File No. BG 210307 30-890 Copyright©RLLord fishinfo@guernsey.net Boulders turned over BG 210307 30-890
sealord > furbelows, saccorhiza polyschides, growing on The Humps, Bailiwick of Guernsey File No. 15-403 ©RLLord fishinfo@guernsey.net
Botryllus schlosseri Gouliot caves 120907 948 smg
Sark's Seashore Caves > Botryllus schlosseri Gouliot caves 120907 948 smg
Botryllus schlosseri Gouliot caves 120907 948 smg
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