Marine Biodiversity Data Portal - NI

Place name : Ruecallan Archway, Rathlin Island. County : Antrim

Date : 2025-05-23 GPS : 55.30753,-6.27120. Depth : -10.0 to -27.0 m. [ View map ]

Site Description : Vertical limestone wall with archway on Rathlin's north wall.

Yellow and white soft corals, Alcyonium digitatum, [00:00:30]; Long-spined sea scorpion, Taurulus bubalis, [00:01:38]; Bright yellow sponge, Sphaerotylus renoufi, [00:02:01]; Nudibranch, Diaphorodoris alba, [00:03:34]; Club-shaped sea squirt, Aplidium punctum, [00:04:11]; Yellow hedgehog sponge, Polymastia boletiformis, [00:04:39]; Bloody Henry starfish, Henricia oculata, [00:05:06]; Green-blue sponge, Hymedesmia paupertas, [00:05:13]; Devonshire cup corals, Caryophyllia smithii, [00:05:58]; Yellow staghorn sponge, Axinella dissimilis [00:06:34]; Ballan wrasse, Labrus bergylta, [00:07:09]; Sea beech, Delesseria sanguinea, [00:07:28]; Oaten pipe hydroids, Tubularia indivisa, [00:07:46]; Guillemots on surface, [00:09:55]

Biotope 1 : Vertical limestone wall and archway (Sponges and anemones on vertical circalittoral bedrock).

PORIFERA
Leucosolenia sp. P
Aplysilla sulfurea O
Dysidea fragilis O
Pachymatisma johnstonia F
Dercitus bucklandi F
Axinella damicornis R
Axinella dissimilis R
Axinella infundibuliformis C
Raspailia hispida O
Raspailia ramosa O
Tethyspira spinosa R
Polymastia boletiformis O
Polymastia penicillus R
Sphaerotylus renoufi R
Tethya citrina O
Iophon hyndmani O
Iophonopsis nigricans O
Lissodendoryx jenjonesae R
Hemimycale columella F
Hymedesmia jecusculum R
Hymedesmia paupertas F
Haliclona urceolus F
Haliclona viscosa C
CNIDARIA
Tubularia indivisa A
Ectopleura larynx O
Halecium halecinum R
Abietinaria abietina O
Sertularella gayi R
Kirchenpaueria pinnata R
Nemertesia antennina C
Nemertesia ramosa F
Aglaophenia tubulifera O
Alcyonium digitatum A
Alcyonium hibernicum R
Parazoanthus anguicomus O
Parazoanthus axinellae C
Actinothoe sphyrodeta C
Corynactis viridis O
Caryophyllia smithii A
CRUSTACEA
Adna anglica C
Caprellidae sp. P
MOLLUSCA
Tritonia hombergii P
Diaphorodoris luteocincta R
Diaphorodoris alba R
Polycera faeroensis R
Polycera kernowensis R
Cadlina laevis R
Antiopella cristata R
BRYOZOA
Crisia denticulata F
Crisia eburnea C
Plagioecia patina O
Flustra foliacea R
Schizomavella linearis R
ECHINODERMATA
Henricia oculata R
Marthasterias glacialis R
Ophiactis balli P
TUNICATA
Polyclinum aurantium R
Aplidium nordmanni O
Aplidium punctum C
Didemnidae sp. O
Lissoclinum weigelei P
Polycarpa pomaria O
Botryllus renierii R
PISCES
Taurulus bubalis R
Labrus bergylta R
RHODOPHYTA
Rhodophyllis divaricata O
Heterosiphonia plumosa O
Delesseria sanguinea O
CHROMOPHYTA
Laminaria hyperborea R