Animalia > Chordata > Ascidiacea > Phlebobranchia > Ascidiidae > Ascidiella > Ascidiella aspersa

Ascidiella aspersa (European sea squirt)

Synonyms: Ascidia aculeata; Ascidia affinis; Ascidia albida; Ascidia aspersa; Ascidia cristata; Ascidia elliptica; Ascidia expansa; Ascidia minuta; Ascidia normanni; Ascidia opalina; Ascidia patula; Ascidia pedunculata; Ascidia pellucida; Ascidia pustulosa; Ascidia scabra; Ascidia sordida; Ascidia triangularis; Ascidia truncata; Ascidiella cristata; Ascidiella pellucida; Phallusia aspersa; Phallusia cristata; Phallusia patula

Wikipedia Abstract

Ascidiella aspersa is a species of solitary sea squirts native to the northeastern Atlantic, from the Mediterranean Sea to Norway. They possess oval bodies up to 50 to 130 mm (2.0 to 5.1 in) in length. Their branchial (or oral) siphons are conical and positioned at the top of the body. They possess six to eight lobes. The atrial siphons are located at the upper third of the side of the body and possess six lobes. The body is covered by a firm transparent test that is greyish to brown in color. The test often snag detritus that remain loosely attached to the animal. When expanded, at most 40 tentacles can be observed on the inside surface of the branchial wall. Both the openings of the branchial and atrial siphons possess lighter colored ridges on their rims. They may also be frilled at tim
View Wikipedia Record: Ascidiella aspersa

Invasive Species

Ascidiella aspersa (European sea squirt) is a solitary marine and estuarine tunicate that is native from Norway to the Mediterranean. It is a suspension filter-feeder and was introduced via foulling on the hulls of ships to the northwest coast of the Atlantic, India, Australia and New Zealand. Commonly called the European sea squirt, it has become a moderate to serious threat by displacing native fauna.
View ISSG Record: Ascidiella aspersa

Protected Areas

Name IUCN Category Area acres Location Species Website Climate Land Use
Ascrib, Isay and Dunvegan 6388 Scotland, United Kingdom
Berwickshire and North Northumberland Coast 160731 England/Scotland, United Kingdom  
Cardigan Bay/ Bae Ceredigion 236876 Wales, United Kingdom
Chesil and the Fleet 4032 England, United Kingdom
Clogwyni Pen Llyn/ Seacliffs of Lleyn 2591 Wales, United Kingdom
Doggerbank 419820 Germany      
Drigg Coast 3453 England, United Kingdom
Eileanan agus Sgeiran Lios mór 2816 Scotland, United Kingdom  
Essex Estuaries 114016 England, United Kingdom
Fal and Helford 15785 England, United Kingdom    
Firth of Lorn 51830 Scotland, United Kingdom
Flamborough Head 15597 England, United Kingdom  
Isles of Scilly Complex 66350 England, United Kingdom    
Loch Creran 3030 Scotland, United Kingdom  
Loch Laxford 3018 Scotland, United Kingdom
Loch Moidart and Loch Shiel Woods 4341 Scotland, United Kingdom
Loch nam Madadh 5734 Scotland, United Kingdom
Loch Roag Lagoons 108 Scotland, United Kingdom  
Lochs Duich, Long and Alsh Reefs 5883 Scotland, United Kingdom  
Luce Bay and Sands 120487 Scotland, United Kingdom
Lyme Bay and Torbay 77215 England, United Kingdom
Moray Firth 373987 Scotland, United Kingdom  
Morecambe Bay 151985 England, United Kingdom
Morvern Woods 4763 Scotland, United Kingdom
North Harris 32450 Scotland, United Kingdom
North Pembrokeshire Woodlands/ Coedydd Gogledd Sir Benfro 780 Wales, United Kingdom  
Obain Loch Euphoirt 861 Scotland, United Kingdom
Pembrokeshire Marine/ Sir Benfro Forol 341177 Wales, United Kingdom  
Pen Llyn a`r Sarnau/ Lleyn Peninsula and the Sarnau 360832 Wales, United Kingdom
Plymouth Sound and Estuaries 15820 England, United Kingdom
Rinns of Islay 2841 Scotland, United Kingdom
Ronas Hill – North Roe 12110 Scotland, United Kingdom  
Sanday 27112 Scotland, United Kingdom    
Solent Maritime 27985 England, United Kingdom
Solway Firth 107829 England/Scotland, United Kingdom
Sound of Arisaig (Loch Ailort to Loch Ceann Traigh) 11260 Scotland, United Kingdom
South Wight Maritime 49082 England, United Kingdom
SPA Östliche Deutsche Bucht 774707 Germany      
St Kilda 62932 Scotland, United Kingdom    
Start Point to Plymouth Sound & Eddystone 84204 England, United Kingdom  
Stromness Heaths and Coast 1571 Scotland, United Kingdom  
Sullom Voe 6668 Scotland, United Kingdom
Sunart 25320 Scotland, United Kingdom
Sylter Außenriff 1313190 Germany      
Taynish and Knapdale Woods 2388 Scotland, United Kingdom
Tayvallich Juniper and Coast 2999 Scotland, United Kingdom
The Vadills 154 Scotland, United Kingdom
Y Fenai a Bae Conwy/ Menai Strait and Conwy Bay 65440 Wales, United Kingdom  


NE North Atlantic; Mediterranean (Southern Ocean introduced);



Protected Areas provided by GBIF Global Biodiversity Information Facility
Natura 2000, UK data: © Crown copyright and database right [2010] All rights reserved. Ordnance Survey Licence number 100017955
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Abstract provided by DBpedia licensed under a Creative Commons License
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