Welcome to the guide to the Macrobenthos of the North Sea. Vol. II - Key to Tunicata

constructed by:

Mario de Kluijver, Sarita Ingalsuo, Andre van Nieuwenhuijzen and Huub Veldhuijzen van Zanten.

The Macrobenthos of the North Sea project was initiated by ETI and the Zoological Museum at the University of Amsterdam. It provides users with a complete and up-to-date catalogue of macrobenthic species, including reliable standardized identification guides. In a series of five CD-ROMs the biological diversity in the shallow-water macrobenthos of the North Sea (down to 100 m) is documented.
Volume II of this series contains detailed information on 651 species of the phyla Polychaeta, Platyhelminthes, Nemertina, Sipuncula and miscellaneous groups (Priapulida, Echiura and Pogonophora), including fully illustrated picture keys and glossaries of used terms.

Sources:
Sources for the information are manifold, but the major source is "The Marine Fauna of the British Isles and North-West Europa" (eds. Hayward and Ryland, 1990).