Published online by Cambridge University Press: 04 May 2015
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 ctenophore Bolinopsis infundibulum and the cydippid Pleurobrachia pileus, two beroid ctenophores, were noted – Beroe cucumis and Beroe gracilis. The latter species had not been documented before in Norwegian waters.