Gardaí have confirmed that the recovered remains of the Rescue 116 crew member is that of Captain Mark Duffy.
Duffy was brought to shore by the naval vessel the LE Samuel Beckett.
The helicopter remains on the ocean floor 40 metres below sea level.
The search is continuing for two other members of the coast guard crew.
Dive teams were able to enter the water off the coast of Mayo this morning and a remotely operated vehicle spent the night clearing debris around the crash site at Blackrock Island.