This study describes species of the genus Hymedesmia from three areas of cold-water coral reef: Mingulay Reef Complex (Scotland, UK) and Rockall and Porcupine Banks (off UK and Irish coasts). Five new species are described: Hymedesmia (Hymedesmia) gibbosa,

Six new species of Hymedesmia (Hymedesmiidae, Poecilosclerida) are described from Rathlin Island, Northern Ireland: Hymedesmia cohesibacilla sp. nov., Hymedesmia umbelliformis sp. nov., Hymedesmia cratera sp. nov., Hymedesmia rathlinia sp. nov., Hymedesmia

Cold-water corals (CWC) are known to be deep-sea biodiversity hotspots, yet there is still a huge knowledge gap regarding their associated fauna. As so, CWC ecosystems pose as a perfect environment for the discovery of new species. In this context two