A shovel was used to collect sand at an approximate water depth of 15 cm at Telegrafbukta, Tromsø (coordinates: 69° 37′ 55.2″ N 18° 54′ 22.3″ E), a popular public beach. Flatworms were extracted from the sand by relaxation in 7% MgCl2in seawater followed by gentle shaking, de...