This 2011 video from Sweden shows dead men’s finger coral and other marine life.
Translated from the Dutch Stichting ANEMOON marine biologists:
1 JANUARY 2017 – How nice is it to start 2017 immediately with some good news from our salty waters. Dead man’s fingers, our only cold water coral species after 1994 was observed less in the Oosterschelde [estuary in Zeeland province]. In the summer of 2011 it even seemed to have disappeared. From autumn 2011 on the coral spontaneously came back. Now colonies of dead man’s fingers are seen of almost unprecedented dimensions.