From the Mid North Atlantic Ocean 18 species of Nemertinea are reported, two of which are new for the Atlantic, six are new for the North Atlantic. One specimen was the first male to be described of Dinonemertes investigatoris. For Nectonemertes mirabilis a seasonal shift in distribution is found with very shallow (300 m) occurrence in winter and spring north of 41° N. The other species were all collected in hauls below 500 m.