Europa; Russland; Arctic Circle Dive Center; Polar Kreis; Eistauchen; Leine; Eisleine; Seenelke, Seeanemone, Kaltwasseranemone, Blumentier, Blumentiere, Eisloch; Eistaucher, niedere | Europe; Russia; Arctic Circle Dive Centre; polar circle; ice dive; diving; line; cord; ice hole; plumose anemone, frilled anemone, sea anemone, invertebrates | Metridium senile, Metridiidae