sheet no. 111AlgaeHarpoon-alga
Asparagopsis armata
On foot · Underwater
Marine non-indigenous species (NIS)
Launched on the initiative of Les Amis de BioObs and Association Nature du Calvados within the Sentinelles de la Mer Normandie network, the ALIEN Mer Normandie programme monitors, with the help of citizens, non-indigenous species and species extending their range in Normandy’s waters and on its foreshores.


All the species of the network in a printable document, to take diving or along the shore: photo, name, group, number of observations in the network and tick boxes.
Showing 23 species (of 23)
sheet no. 111AlgaeAsparagopsis armata
On foot · Underwater
sheet no. 1340AlgaeGrateloupia turuturu
On foot · Underwater
sheet no. 649AlgaeSargassum muticum
On foot · Underwater
sheet no. 929AlgaeUndaria pinnatifida
On foot · Underwater
sheet no. 1130CnidariaDiadumene cincta
On foot · Underwater
sheet no. 937CnidariaDiadumene lineata
On foot · Underwater
sheet no. 473CtenophoraMnemiopsis leidyi
Observed underwater
sheet no. 1199WormsFicopomatus enigmaticus
On foot · Underwater
sheet no. 342MolluscsDendrodoris limbata
On foot · Underwater
sheet no. 310MolluscsOctopus vulgaris
On foot · Underwater
sheet no. 2471MolluscsRapana venosa
On foot · Underwater
sheet no. 1204LophophorataBugula neritina
On foot · Underwater
sheet no. 3216ArthropodsEriocheir sinensis
On foot · Underwater
sheet no. 995ArthropodsHemigrapsus sanguineus
On foot · Underwater
sheet no. 1342ArthropodsHemigrapsus takanoi
On foot · Underwater
sheet no. 420ArthropodsPalinurus elephas
Observed underwater
sheet no. 3170ProchordataCiona robusta
Observed underwater
sheet no. 1200ProchordataCorella eumyota
On foot · Underwater
sheet no. 1202ProchordataPerophora japonica
On foot · Underwater
sheet no. 474ProchordataPhallusia mammillata
On foot · Underwater
sheet no. 1203ProchordataStyela clava
On foot · Underwater
sheet no. 587VertebratesParablennius pilicornis
On foot · Underwater
sheet no. 586VertebratesSalaria pavo
On foot · Underwater
While scuba diving, snorkelling, freediving or on foot along the shore and the strandline.
A photo, even an imperfect one, lets the validator confirm the identification.
In my BioObs logbook: species, habitat, date and place.
A question about an identification? Write to us.
Better understanding potentially invasive species and controlling their spread: this is the goal BioObs works towards alongside its regional partners.
Read the definition on the OPEN participatory science portal (in French) (opens in a new tab)
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