sealord : photo keywords : mollusca- powered by SmugMug

Style:

keyword pages: 1 2 3 4 >

< 1 of 36 >

sealord > Guernsey molluscs > Raphitoma purpurea coralline pool BG 180407 9-899 smg

sealord > Guernsey molluscs > Ovatella myosotis BG 180407 28-899 smg

sealord > Guernsey molluscs > Raphitoma purpurea coralline pool BG 180407 5-899 smg

sealord > Since the last set of spring tides (4 to 6 March 2007) netted dog whelks, Hinia reticulata, had laid many egg capsules on eel grass, Zostera marina, in Belle Greve Bay on Guernsey's east coast.

The eel grass beds are subtidal during neap tides but they are exposed during big low spring tides. These occurred from 19 to 22 March. During low water I saw a large number of netted dog whelk egg capsules attached to eel grass that occurred in a shallow pool on the beach in Belle Greve Bay. Photographed on the 21 March 2007.
File No. BG 210307 7533
©RLLord
fishinfo@guernsey.net

sealord > This image shows the foot of the turban top shell, Gibbula magus. I turned the snail on its side. The animal extended its foot to quickly turn itself over. This image clearly shows the epipodal tentacles. One eye is hidden behind the 'R' in the Sealord watermark. Dr. Alastair Graham provides a detailed description of the animal in his book "Molluscs: Prosobranch and Pyramidellid Gastropods" published as part of the Synopses of the British Fauna. The following attributes which he writes about can be seen in this photograph: The snout is densely papillated. The epipodal ridge has a scalloped edge. The foot is blunt anteriorly, pointed posteriorly. Its dorsal surface carries many transverse grooves. The umbilicus (which is a deep hole in the base of the shell separate from the opening from which the animal extends from) can be seen above the 'h' in 'Photography'. The umbilicus is large and approached by a comma-shaped groove. Dr. Graham writes that turban top shells "usually live below tidemarks, though rare specimens may be found at L.W.S.T." (low water during a spring tide). This description matches my observations.
File No. BG 200307 31-891
©RLLord
fishinfo@guernsey.net

sealord > The live turban top shell, Gibbula magus, was found on the beach in Belle Greve Bay on Guernsey's east coast on 20 March 2007. This is the first live individual I have seen in Guernsey. Empty turban top shells are quite common on Chouet beach in Ladies Bay on Guernsey's north coast. The tentacles of a worm, possibly a spionid worm, may be sticking out of the top of the snail shell but I need to contact a specialist to verify this.
File No. BG 200307 28-891
©RLLord
fishinfo@guernsey.net

sealord > Scallop fisherman Stan Breban caught this fan mussel, Atrina fragilis, while dredging for scallops on the 30 January 2007. The shell length was 23.0 cm. The maximum shell width was 12.83 cm (measured with callipers) and the maximum thickness of both valves of the living animal was 5.04 cm. The bivalve drained of free water weighed 293 grams.
The fan mussel was caught in 54 fathoms of water somewhere south-east of Sark to the east of the Longue Bank. Stan told me he sees about four of these fan mussels per year. The live Atrina fragilis was returned to a net bag under the pontoon by the fish quay in St. Peter Port harbour after photography. Later Stan returned the live bivalve mollusc to the open sea.

File No. 1-875
©RLLord
fishinfo@guernsey.net

sealord > Guernsey molluscs > Jujubinus striatus eel grass BG 051106 32-869 smg

sealord > The small snails, Rissostomia membranacea, somehow remain attached to the leaves of eel grass, Zostera marina, even while the eel grass leaves are being pulled from one side to another by the surf and currents of the seashore. This gastropod was found on eel grass at the southern end of Belle Greve Bay on Guernsey's east coast and photographed on 5 November 2006
File No. 051106 18-869
©RLLord
fishinfo@guernsey.net

Raphitoma purpurea coralline pool BG 180407 9-899 smg

Guernsey molluscs > Raphitoma purpurea coralline pool BG 180407 9-899 smg

Raphitoma purpurea coralline pool BG 180407 9-899 smg

See photo in gallery

keyword pages: 1 2 3 4 >

< 1 of 36 >

Comments

|

New comment:

Rating: stars

Name:

Link:

To foil spammers, enter this code:

in this box: Code unreadable?

Available Feeds | What are feeds?

sealord's 'mollusca' photos:

Atom |

RSS