This is a bamboo coral from Kelvin seamount during
Mountains in the Sea II expedition in 2004. This whip form is about 4 meters (13 feet) in length, but we have seen some that are 5 meters (16.4 feet) long, usually with a lot of curling of the axis at the top. This colony shows what might be one branch, which sometimes is present, but it can also be another individual that has settled on the main colony.