EVENTS

            Members Reports and Photos

 

 

SATURDAY  15th NOVEMBER 2014,    DUN LAOGHAIRE, CO. DUBLIN
 
LEADER: LAILA HIGGINS

Intertidal Ecology
The shoreline is a combination of rocky shore, sandy beach, and harbour. It has a nice selection of seaweeds, molluscs, crustaceans, polychaetes and birds.

SEAWEEDS

Rhodophyta (Red)

Corallina officinalis

Red coralline alga

Polysiphonia sp.

Siphon weed

 Phaeophyceae (Brown)

Ascophyllum nodosum

Egg/knotted wrack

Fucus spiralis

Spiralled wrack

Fucus serratus

Serrated/toothed wrack

Fucus vesiculosus

Bladder wrack

Halidrys siliquosa

Sea oak

Laminaria digitata

Kelp/oar weed/tangle

 Green (Chlorophyta)

Ulva intestinalis

Gut weed

Ulva lactuca

Sea lettuce

Invertebrates

Cnidaria (jellies, anemones, corals, hydroids)

Actinia equina

Beadlet anemone, red

Actinia prasina

Beadlet anemone, green

Velella velella

By-the-wind sailor

Bryozoa (colonial encrusting animals)

Alcyonidium sp.

Bryozoan

 Annelida (segmented worms)

Arencola marina

Lug worm

Lanice conchilega

Sand mason worm

Nereis sp.

Maddy/ragworm

Nereis sp.

Herringbone worm (small ragworm)

Nereis sp.

White rag/silvers

Spirobis spirobis

Tube worm (on the alga)

 Crustacea (barnacles, shrimp, crabs, lice)

Amphipoda (order)

Small shrimp

Chthamalus montagui

Lower shore acorn-type barnacle

Liocarcinus depurator

Harbour crab

Semibalanus balanoides

Upper shore acorn-type barnacle

 Mollusca (gastropods, bivalves, octopus and squid)

Angulus tenuis

Thin tellin

Cerastoma edule

Common cockle (shell only)

Gibbula umbilicalis

Flat topshell

Littorina littorea

Common periwinkle

Littorina obtusata

Flat periwinkle

Littorina saxatilis

Rough periwinkle

Mytilus edulis

Edible blue mussel

Nucella lapilus

Dog whelk, white and banded

Polyplecaphora (class)

Chiton

Patella vulgaris

Common limpet

Solen marginatus

Grooved razor shell (shell only)

 Echinodermata (starfish, brittlestars, sea urchins, sea cucumbers, feather stars)

Psammechinus miliaris

Green urchin

 Vertebrates

 Osteichthyes (bony fish)

Pholis gunnellus

Butterfish

   Aves (Birds)

 

             List: Laila Higgins                

 

       

   Polysiphonia sp.           Bunker, Brodie, Maggs & Bunker                      Fucus vesiculosus    

     

Lanice conchilega                                             Spirorbis spirorbis

 

                             Ulva lactuca                                

  

Ascophyllum nodosum                    Gibbula umbilicalis         

   

Actinia equina                                                                  Arencola marina                           

   

            A. Psammechinus millaris                       B. Carcinus maenas                         C. N. lapilus M. edulis P. vulgaris C. edule       

   

Littorina saxatilis                                 Cerastoderma edule                                                 Velella velella

     

                                A. Mytilus edulis                                             B. Patella vulgaris                     C. Nucella lapilus and Chthamalus/Semibalanus species

 

Pholis gunnellus

 

                           Leading the Way                                                         The Followers                                     

  Photographs © P Lenihan

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