Annelida: Polychaeta: Capitellidae
In phases of contraction. The images were taken on two levels of focus.
20x Plan Apo. DIC. Sampled in Bay of Santander. February 18th 2017.
Lacalli, T.C. (1980). A guide to the marine flora and fauna of the Bay of Fundy: Polychaete larvae from Passamaquoddy bay. Canadian Technical Report of Fisheries and Aquatic Science 940. (see Fig. 12-14).
Larink, O. & Westheide, W. (2011). Coastal plankton. Verlag Dr.Friedrich Pfeil. München. (see Plate 47).
Plate, S. & Husemann, E. (1994). Identification guide to the planktonic polychaete larvae around the island of Helgoland (German Bight). Helgoländer Meeresunters, 48, 1-58. (see Fig. 81).