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Place name : Seal Bay, Skerries, Portrush. County : Antrim

Date : 2024-10-05 GPS : 55.22385,-6.63403. Depth : -12.0 to -27.0 m. [ View map ]

Site Description : Bay on North side of the Skerries, partly out of the tidal stream and full wave exposure. Seabed of rounded boulders in moderate tidal stream, exposed to open sea to the North, Flustra foliacea common below 20 m; and bedrock wall from 20m to 12 m with Laminaria hyperborea, silty with strong tidal streams and fully exposed to wave action from the North.

Siphoned feather seaweed Heterosiphonia plumosa [00:00:19]; Brown fan weed Dictyota dichotoma [00:00:25]; Common urchin Echinus esculentus [00:00:35]; Hornwrack Flustra foliacea [00:01:34]; Finger bryozoan Alcyonidium diaphanum [00:01:53]; Bryozoan Securiflustra securifrons [00:02:47]; Yellow boring sponge Cliona celata [00:03:47]; Branched antenna hydroid Nemertesia ramosa [00:04:35]; Brown crab Cancer pagurus [00:05:29]; Red sponge Mycale rotalis [00:05:55]; Cotton spinner sea cucumber Holothuria forskali [00:06:19]; Tompot blenny Parablennius gattorugine [00:06:54]; lost fishing rod [00:07:21]; Rock cook Centrolabrus exoletus [00:07:24]; Common sunstar Crossaster papposus [00:07:30]; Flat tongue weed Erythroglossum laciniatum [00:07:44]; Nudibranch Diaphorodoris alba [00:07:53]; Hedgehog sponge Polymastia boletiformis [00:07:59]; Boring sponge (non-massive type) Cliona celata [00:08:14]; Star ascidian Botryllus renierii [00:09:57]; Long-spined sea scorpion Taurulus bubalis [00:10:04]; Painted topshell Calliostoma zizyphinum [00:11:59].

Biotope 1 : Mixed faunal turf communities.

PORIFERA
Raspailia ramosa R
Stelligera montagui R
Polymastia boletiformis R
Cliona celata F
Phorbas fictitius R
Mycale rotalis R
CNIDARIA
Tubularia indivisa O
Sertularella sp. F
Sertularella polyzonias O
Sertularia argentea O
Nemertesia antennina C
Nemertesia ramosa O
Caryophyllia smithii C
Caryophyllia smithii O
ANNELIDA
Pomatoceros triqueter F
CRUSTACEA
Balanus crenatus O
Adna anglica C
Cancer pagurus R
MOLLUSCA
Calliostoma zizyphinum O
Diaphorodoris alba R
BRYOZOA
Crisia denticulata F
Crisia eburnea O
Alcyonidium diaphanum C
Flustra foliacea C
Securiflustra securifrons F
ECHINODERMATA
Crossaster papposus R
Henricia oculata R
Marthasterias glacialis R
Echinus esculentus C
Holothuria forskali R
TUNICATA
Botryllus renierii O
PISCES
Centrolabrus exoletus O
Labrus bergylta O
Labrus mixtus R
Parablennius gattorugine R
RHODOPHYTA
Heterosiphonia plumosa F
Acrosorium venulosum F
Delesseria sanguinea O
Erythroglossum laciniatum F
CHROMOPHYTA
Dictyota dichotoma O

Biotope 2 : Laminaria hyperborea forest with dense foliose red seaweeds on exposed upper infralittoral rock.

PORIFERA
Dysidea fragilis O
CNIDARIA
Amphisbetia operculata O
Obelia geniculata C
Alcyonium digitatum F
Actinothoe sphyrodeta O
Corynactis viridis F
CRUSTACEA
Balanus crenatus C
MOLLUSCA
Calliostoma zizyphinum O
BRYOZOA
Membranipora membranacea C
TUNICATA
Botryllus renierii O
PISCES
Taurulus bubalis R
RHODOPHYTA
Dilsea carnosa O
Cryptopleura ramosa F
Delesseria sanguinea C
Membranoptera alata O
CHROMOPHYTA
Dictyota dichotoma F
Laminaria hyperborea C

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