Prior to its introduction in Europe Acartia (Acanthacartia) tonsa only occurred in the Indo-Pacific region. The ... [details]

The origin of the Bay barnacle Amphibalanus improvisus is unclear, and therefore referred to by many scientists as ... [details]

The swim-bladder nematode, Anguillicola crassus, parasitizes the swim-bladder of the European eel (Anguilla ... [details]

The swim-bladder nematode Anguillicoloides crassus lives as a parasite in the swim-bladder of the European eel ... [details]

The red alga Antithamnionella spirographidis originates from the north of the Pacific region. This alga ended up in ... [details]

The origin of red alga Antithamnionella ternifolia is unclear however there is speculation that the algae comes ... [details]

Originally, the ascidian Aplidium glabrum only occurred in cold to Arctic regions. It is a colony forming ascidian ... [details]

The oyster parasite Bonamia ostreae is native to California and has been exported to Europe through oyster ... [details]

The colony-forming sea squirt Botrylloides violaceus was originally only found in the northwest of the Pacific ... [details]

The bryozoan Bugula simplex was transported on hulls of cargo ships and yachts from the Mediterranean Sea to the ... [details]

The origin of Bugula stolonifera is unknown. The species is known worldwide as an exotic species and found on ship ... [details]

The blue crab Callinectes sapidus is a crab species that occurs naturally along the Atlantic coast of America. It ... [details]

The origin of the Japanese skeleton shrimp Caprella mutica is East Asia, near Japan. The species was brought to ... [details]

The origin of the Caspian mud shrimp Chelicorophium curvispinum is in rivers that flow into the Caspian and Black ... [details]

The natural area of distribution of Codium fragile fragile is the Pacific region,near Japan. This green algae ... [details]

The freshwater hydroid Cordylophora caspia occurs in both fresh and brackish water. The hydroid naturally occurs ... [details]

Originally, the diatom Coscinodiscus wailesii only occurred in the Pacific and Indian Ocean. It is presumed that ... [details]

The Pacific cupped oyster Crassostrea gigas, seen by many people as a delicacy, was imported to Belgium in 1969 as ... [details]

The common Atlantic slipper snail or slipper limpet Crepidula fornicata originates from the east coast of ... [details]

The green anemone Diadumene lineata is an anemone (Anthozoa) originally only found in the northwestern part of the ... [details]

Diplosoma listerianum is a cryptogenic species as its origins are unknown. In Europe the species is widely ... [details]

Originally the Australasian barnacle Elminius modestus only occurred in Australia and Asia. During the Second World ... [details]

The American jack knife clam Ensis directus originates from the American east coast, and came to Europe through ... [details]

The Chinese mitten crab already appears in Belgium from 1933. The crab originates from the Far East and was ... [details]

The copepod Eurytemora americana used to be found solely at the east coasts of America. The species reached Europe ... [details]

The Australian tubeworm Ficopomatus enigmaticus is a tube building polychaete worm with a presumable origin in the ... [details]

Gammarus tigrinus is a species which naturally occurs in North America. It is thought the species was mainly ... [details]

For the rope grass hydroid Garveia franciscana both its origins and how it got to Belgian regions remains ... [details]

Haliclona (Soestella) xena was first discovered in the Netherlands in 1977. It took until 1986 before this species ... [details]

The asian shore crab Hemigrapsus sanguineus originates from the Northwest Pacific region, but was brought to ... [details]

The bloody-red shrimp Hemimysis anomala occurs naturally in the Caspian Sea, the Black Sea, and rivers in Russia, ... [details]

The original distribution area of the amphipod Incisocalliope aestuarius stretches along the river mouths of the ... [details]

Keratella tropica is, like most rotifers, widely distributed. This species is mainly found in tropical and ... [details]

The titan acorn barnacle or Megabalanus coccopoma originally only occurred along the west coasts of Central- and ... [details]

The barnacle Megabalanus tintinnabulum was naturally only found in tropical waters. Its exact place of origin is ... [details]

The amphipod Melita nitida was originally only found on the east and west coast of North-America. The species was ... [details]

The natural range of distribution of the northern quahog Mercenaria mercenaria spreads along the east coast of the ... [details]

The Atlantic croaker or hardhead Micropogonias undulatus was previously only found along the east coast of the ... [details]

The sea walnut Mnemiopsis leidyi is an infamous predator of zooplankton and fish eggs. The species’ natural area ... [details]

The sea grape, Molgula manhattensis, has been present for a long time in Europe, along the east coast of America, ... [details]

It is believed that the softshell or sand gaper Mya arenaria was introduced from America in the 16th or 17th ... [details]

The parasitic copepod Mytilicola intestinalis originates from the Mediterranean Sea and ended up in Western Europe ... [details]

The brackish water mussel or dark falsemussel Mytilopsis leucophaeata is an American species that came to Beligan ... [details]

The hydroid Nemopsis bachei occurred naturally only along the Atlantic coast of North America. By attaching their ... [details]

The red alga Neosiphonia harveyi originates from Japan and the region around the North-Pacific. This alga probably ... [details]

The planktonic diatom Odontella sinensis used to occur solely in the Indo-Pacific regions, but in the beginning of ... [details]

The original distribution area of Orchestia cavimana stretches along the Caspian Sea, the Black Sea and the east of ... [details]

The original range of distribution of the Oriental shrimp Palaemon macrodactylus are the estuaries along the coasts ... [details]

The natural distribution area of the false angelwing Petricola pholadiformis was limited to the east coast of North ... [details]

The red alga Polysiphonia senticulosa originates from the North-Pacific region. This alga reached Europe through ... [details]

The natural area of distribution of the New-Zealand mudsnail Potamopyrgus antipodarum is situated around ... [details]

Although both its name and shape reminds us of a worm, the shipworm Psiloteredo megotara is a bivalve mollusc. This ... [details]

The Atlantic Rangia or wedge clam Rangia cuneata originates from the Gulf of Mexico. From there this bivalve ... [details]

The dwarf crab or Zuiderzee crab Rhithropanopeus harrisii originally only occurred along the east coast of America, ... [details]

The Japanese sargasso weed or strangleweed Sargassum (Bactrophycus) muticum naturally thrives along the coasts of ... [details]

The common cord-grass Spartina townsendii var. anglica originates from Southern England. It is a hybrid of the ... [details]

The folded sea squirt Styela clava originates from the Asian coasts. Transport through attachment on war ships ... [details]

The marine splash midge Telmatogeton japonicus originally occurs in Australasia and along the east coast of ... [details]

Although both its name and shape reminds us of a worm, the naval shipworm Teredo navalis is a bivalve mollusc. This ... [details]

The origins of the diatom Thalassiosira punctigera are not really known. It is presumed that the species reached ... [details]

The Pacific coast of North America is the original distribution area of Tricellaria inopinata. The species came to ... [details]

Tubificoides heterochaetus is an oligochaete worm that was first reported in Belgian waters in 1952 in the Scheldt ... [details]

Undaria pinnatifida or wakame is a brown alga originating from Northeast Asia, where it is grown for consumption. ... [details]