earth science

List of cnidarians of Ireland

List of cnidarians of Ireland is a earth science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand List of cnidarians of Ireland rather than just read about it. In short: There are 302 species of cnidarians (phylum Cnidaria) recorded in Ireland. The cnidarians' distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.

Key takeaways

List of cnidarians of Ireland belongs to earth science; place it in that map before memorising details.
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Connect List of cnidarians of Ireland to a quantity you can measure, compute or draw — that is where exam questions come from.
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Reference excerpt

There are 302 species of cnidarians (phylum Cnidaria) recorded in Ireland. The cnidarians' distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey. Their bodies consist of mesoglea, a non-living jelly-like substance, sandwiched between two layers of epithelium that are mostly one cell thick. They have two basic body forms: swimming medusae and sessile polyps, both of which are radially symmetrical with mouths surrounded by tentacles that bear cnidocytes. Both forms have a single orifice and body cavity that are used for digestion and respiration. Many cnidarian species produce colonies that are single organisms composed of medusa-like or polyp-like zooids, or both (hence they are trimorphic). Cnidarians found in Ireland and Irish waters include sea pens, sea anemones, hydroids, sea jellies ("jellyfish") and corals.

Class Anthozoa

Order Actiniaria (sea anemones)

Family Actiniidae

Actinia equina (beadlet anemone) Actinia fragacea (strawberry anemone) Anemonia viridis (snakelocks anemone) Anthopleura ballii (red speckled anemone) Aulactinia verrucosa (gem anemone) Urticina eques Urticina felina (northern red anemones, dahlia anemone)

Family Actinostolidae

Stomphia coccinea

Family Aiptasiidae Aiptasia mutabilis

Family Capneidae Capnea sanguinea

Family Edwardsiidae Edwardsia claparedii Edwardsia delapiae Edwardsia timida (timid burrowing anemone) Edwardsiella carnea Scolanthus callimorphus

Family Gonactiniidae Gonactinia prolifera

Family Halcampidae Halcampa chrysanthellum

Family Halcampoididae Halcampoides elongatus

Family Haloclavidae Mesacmaea mitchellii Peachia cylindrica

Family Hormathiidae

Adamsia carciniopados Adamsia palliata (cloak anemone) Calliactis parasitica Cataphellia brodricii Hormathia coronata

Family Metridiidae Metridium senile (plumose anemone, frilled anemone)

Family Sagartiidae Actinothoe sphyrodeta Cereus pedunculatus (daisy anemone) Phellia gausapata Sagartia elegans Sagartia ornata Sagartia troglodytes (mud sagartia, cave-dwelling anemone) Sagartiogeton laceratus Sagartiogeton undatus

Order Alcyonacea (soft corals)

Family Alcyoniidae

Alcyonium digitatum (dead man's fingers) Alcyonium glomeratum (red sea fingers) Alcyonium hibernicum (pink sea fingers) Parerythropodium coralloides

Family Gorgoniidae

Eunicella verrucosa (broad sea fan, pink sea fan, warty gorgonian)

Family Plexauridae Swiftia pallida (northern sea fan)

Order Ceriantharia (tube-dwelling anemone)

Family Arachnactidae

Arachnanthus sarsi

Family Cerianthidae

Cerianthus lloydii (lesser cylinder anemone) Pachycerianthus multiplicatus (firework anemone)

Order Corallimorpharia

Family Corallimorphidae Corynactis viridis

Order Pennatulacea (sea pens)

Family Virgulariidae Virgularia mirabilis

Order Zoantharia

Family Epizoanthidae Epizoanthus couchii

Family Parazoanthidae

Isozoanthus sulcatus Parazoanthus anguicomus Parazoanthus axinellae (yellow cluster anemone)

Class Hydrozoa

Order Anthoathecata (athecate hydroids)

Family Bougainvilliidae

Bougainvillia muscus Garveia nutans

Family Candelabridae Candelabrum phrygium

Family Corymorphidae Corymorpha nutans

Family Corynidae Coryne eximia Coryne muscoides Sarsia densa

Family Eudendriidae

Eudendrium annulatum Eudendrium arbuscula Eudendrium ramosum

Family Hydractiniidae

Clava multicornis Hydractinia echinata (snail fur)

Family Hydridae (hydras) Hydra viridissima (green hydra) Hydra vulgaris (common hydra)

Family Pandeiidae Leuckartiara octona Neoturris pileata

Family Porpitidae (chondrophores)

Velella velella (sea raft, by-the-wind sailor, purple sail, little sail)

Family Tubulariidae

Ectopleura larynx Tubularia indivisa (oaten pipes hydroid)

Order Leptomedusae (thecate hydroids)

Family Aequoreidae Aequorea forskalea Aequorea vitrina

Family Aglaopheniidae Aglaophenia acacia Aglaophenia kirchenpaueri Aglaophenia pluma (toothed feather hydroid, podded hydroid) Aglaophenia tubiformis Aglaophenia tubulifera Gymnangium montagui Lytocarpia myriophyllum

Family Campanulariidae Campanularia hincksii Clytia hemisphaerica Laomedea angulata Laomedea flexuosa Obelia dichotoma Obelia geniculata Obelia longissima Obelia plicata Rhizocaulus verticillatus

Family Haleciidae Halecium beanii Halecium halecinum Halecium muricatum Halecium plumosum

Family Halopterididae Antennella secundaria Halopteris catharina Schizotricha frutescens

Family Kirchenpaueriidae Kirchenpaueria pinnata

Family Lafoeidae Lafoea dumosa

Family Plumulariidae Nemertesia antennina Nemertesia ramosa Plumularia argentea Plumularia cupressina Plumularia distans Plumularia setacea (plumed hydroid, little sea bristle) Polyplumaria flabellata

Family Sertulariidae Abietinaria abietina Abietinaria filicula Amphisbetia operculata Diphasia alata Diphasia attenuata Diphasia fallax Diphasia nigra Diphasia pinaster Diphasia rosacea Dynamena pumila Hydrallmania falcata Sertularella fusiformis Sertularella gayi Sertularella mediterranea Sertularella polyzonias Sertularella rugosa Tamarisca tamarisca Thuiaria articulata (jointed hydroid) Thuiaria thuja

Order Limnomedusae

Family Olindiidae

Craspedacusta sowerbii

Order Siphonophorae (siphonophores)

Family Apolemiidae

Apolemia uvaria (string jellyfish, barbed wire jellyfish, long stringy stingy thingy)

Family Physaliidae

Physalia physalis (Portuguese man-o'-war, blue bottle, floating terror)

Class Scyphozoa (true sea jellies)

Order Rhizostomeae

Family Rhizostomatidae

Rhizostoma pulmo (barrel jelly, dustbin-lid jelly, frilly-mouthed jelly)

Order Semaeostomeae (flag-mouth sea jellies)

Family Cyaneidae

Cyanea capillata (lion's mane jelly) Cyanea lamarckii (blue jelly, bluefire)

Family Pelagiidae Chrysaora hysoscella (compass jelly) Pelagia noctiluca (mauve stinger)

Family Ulmaridae Aurelia aurita (moon jelly, common jelly, saucer jelly)

Order Scleractinia (stony corals, hard corals)

Family Caryophylliidae

Caryophyllia inornata Caryophyllia smithii (Devonshire cup coral) Lophelia pertusa

Family Oculinidae

Madrepora oculata (zigzag coral)

Class Staurozoa

Order Stauromedusae (stalked jellies)

Family Craterolophidae Craterolophus convolvulus

Family Kishinouyeidae Lucernariopsis campanulata

Family Lucernariidae Haliclystus auricula (kaleidoscope jelly)

References

World Register of Marine Species

External links Marine species identification portal

Illustrations

Worked examples

Example 1 — a first encounter with List of cnidarians of Ireland

Start with the simplest possible case. Write down what List of cnidarians of Ireland claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In earth science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to List of cnidarians of Ireland before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about List of cnidarians of Ireland ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of List of cnidarians of Ireland

In research: List of cnidarians of Ireland appears in earth science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses List of cnidarians of Ireland in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: List of cnidarians of Ireland is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cnidarians of the Atlantic Ocean, Fauna of Ireland, Lists of biota of Ireland, so understanding it makes those chapters shorter.
In everyday life: Look for List of cnidarians of Ireland outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study List of cnidarians of Ireland in 20 minutes

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Close the page and write down what List of cnidarians of Ireland means in your own words.
Compare your version with the excerpt and mark what you missed.
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Frequently asked questions

What is List of cnidarians of Ireland in simple terms?

There are 302 species of cnidarians (phylum Cnidaria) recorded in Ireland. The cnidarians' distinguishing feature is cnidocytes, specialized cells that they use mainly for capturing prey.

Why does List of cnidarians of Ireland matter?

Because it connects several earth science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study List of cnidarians of Ireland?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on List of cnidarians of Ireland.