An annotated check-list is given of Pycnogonida species occurring deeper than 2000 m in the seas bordering Europe.

An annotated check-list is given of Holothuroidea species occurring deeper than 2000 m in the seas bordering Europe.

An annotation is given for the species <i>Rokopella brummeri</i> (Goud et Gittenberger, 1993), the only monoplacophoran species occurring deeper than 2000 m in the seas bordering Europe. The species is known only from the type locality in the northeast Atlantic.

An annotated check-list is given of Xenophyophores species occurring deeper than 2000 m in the seas bordering Europe.

An annotated check-list is given of Scleractinia species occurring deeper than 2000 m in the seas bordering Europe.

An annotated check-list is given of Porifera species occurring deeper than 2000 m in the seas bordering Europe.

Data of mesozooplankton are collecting continuously at least twice a year in the northeastern Black Sea from 1994 to present time. Currently, only data until 2005 will be made available.

An annotated check-list is given of Brachiopoda species occurring deeper than 2000 m in the seas bordering Europe.

An annotated check-list is given of Echinoidea species occurring deeper than 2000 m in the seas bordering Europe.

An annotated check-list is given of Antipatharia species occurring deeper than 2000 m in the seas bordering Europe.