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Place name : S of Bruce's Cave, Rathlin Island. County : Antrim

Date : 2024-10-16 GPS : 55.29403,-6.16900. Depth : -15.0 to -30.0 m. [ View map ]

Site Description : East coast of Rathlin Island. Current-swept upper circalittoral stable cobbles and boulders with diverse hydroid turt and erect bryozoan turf.

Sea beech Delesseria sanguinea [00:00:45]; Rose coral bryozoan Pentapora foliacea [00:00:52]; Hydroid Tamarisca tamarisca [00:01:24]; Hedgehog sponge Polymastia boletiformis [00:01:48]; Fan hydroid Polyplumaria flabellata [00:01:58]; Brown hydroid Diphasia alata [00:02:11]; Rose coral bryozoan Pentapora foliacea [00:03:19]; Rare hydroids Diphasia alata, Diphasia fallax & Polyplumaria flabellata [00:03:50]; Cup sponge Axinella infundibuliformis [00:04:12]; Yellow hydroid Sertularella gayi [00:04:21]; Beautiful eyelash weed Calliblepharis ciliata [00:04:42]; King scallop Pecten maximus [00:05:28]; Netted wing weed Dictyopteris polypodioides [00:05:59]; Forest kelp Laminaria hyperborea [00:06:30]; Sea beech Delesseria sanguinea [00:06:51]; Sea oak Halidrys siliquosa [00:06:58].

Biotope 1 : Current-swept upper circalittoral stable cobbles and boulders with diverse hydroid turt and erect bryozoan turf

PORIFERA
Dysidea fragilis R
Axinella dissimilis R
Axinella infundibuliformis O
Stelligera stuposa R
Hymedesmia paupertas O
CNIDARIA
Abietinaria abietina O
Diphasia alata F
Diphasia fallax C
Sertularella gayi F
Tamarisca tamarisca O
Nemertesia antennina O
Polyplumaria flabellata C
Schizotricha frutescens R
Aglaophenia tubulifera C
Epizoanthus couchii R
Actinothoe sphyrodeta O
Caryophyllia smithii O
ANNELIDA
Chaetopterus sp. O
Salmacina dysteri R
CRUSTACEA
Adna anglica P
MOLLUSCA
Calliostoma zizyphinum R
Crimora papillata R
Edmundsella pedata R
Pecten maximus R
Venus casina R
BRYOZOA
Crisia denticulata A
Crisia eburnea C
Flustra foliacea C
Securiflustra securifrons R
Cellaria sinuosa F
Porella compressa R
Pentapora foliacea O
ECHINODERMATA
Henricia oculata R
Marthasterias glacialis R
TUNICATA
Ascidia mentula O
Polycarpa pomaria O
Botryllus sp. R
Pyura squamulosa R
PISCES
Centrolabrus exoletus R
Ctenolabrus rupestris O
Labrus mixtus R
RHODOPHYTA
Calliblepharis ciliata F
Kallymenia reniformis O
Stenogramma interruptum O
Heterosiphonia plumosa O
Acrosorium venulosum O
Cryptopleura ramosa R
Delesseria sanguinea O
Drachiella heterocarpa O
Hypoglossum hypoglossoides O
CHROMOPHYTA
Halopteris filicina R
Dictyopteris polypodioides O

Biotope 2 : Large rounded boulders lower infralittoral with sparse kelp, coraline crusts, Delesseria sanguinea and other foliose reds

PORIFERA
Sycon ciliatum R
CNIDARIA
Sertularella gayi R
Aglaophenia tubulifera R
Obelia geniculata O
Alcyonium digitatum R
Caryophyllia smithii O
MOLLUSCA
Edmundsella pedata R
Pecten maximus R
BRYOZOA
Crisia denticulata F
Alcyonidium diaphanum R
Cellaria fistulosa O
PISCES
Scyliorhinus canicula R
Centrolabrus exoletus R
Ctenolabrus rupestris R
RHODOPHYTA
Metacallophyllis laciniata O
Kallymenia reniformis F
Heterosiphonia plumosa C
Acrosorium venulosum F
Cryptopleura ramosa F
Delesseria sanguinea C
CHROMOPHYTA
Dictyopteris polypodioides C
Carpomitra costata R
Laminaria hyperborea O
Saccharina latissima O
Halidrys siliquosa R

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