First record of Beroe gracilis Künne, 1939 (Ctenophora: Beroida: Beroidae) from Norway, found in a Mnemiopsis leidyi A. Agassiz, 1865 bloom

In September 2014 an unusual mixture of ctenophores was recorded at Arboretet, south-western Norway and at Flødevigen, near Arendal on the south coast of Norway. In addition to the invasive American lobate ctenophore,Mnemiopsis leidyi, the common northern lobate ctenophoreBolinopsis infundibulumand the cydippidPleurobrachia pileus, two beroid ctenophores, were noted –Beroe cucumisandBeroegracilis. The latter species had not been documented before in Norwegian waters.