| Abstract: | Ascidians from two locations in the North Atlantic are discussed. Predominantly small specimens of five known species were taken by Sigsbi trawl in the vicinity of the wreck of the Titanic (the region referred to as the Titanic location), and two large specimens of a Corynascidia species were taken by manned submersible MIR‐2 on the mid‐Atlantic Ridge (the Charlie Gibbs Fracture Zone). Definitions of the species are reviewed and their relationships and intraspecific variations are discussed and revised. |
