"thread-like" forms Allan Hancock Foundation (AHF) – 'Velero' Expeditions museum collection soft corals Alcyonacea Animalia Anthozoa Cnidaria "red whips" Swiftia Placogorgia Plexauridae cryptic species local endemics new Eugorgia species Thesea colony form deep-water gorgonians ecological variation geographical sclerite morphology Gorgoniidae Leptogorgia new species Chromoplexaura Chromoplexaura marki Muricea Swiftia simplex Acanthogorgiidae Acanthogorgia Eugorgia Swiftia kofoidi Swiftia pacifica Muricea fruticosa Acanthogorgia gracillima Alcyonaria Cephalornis Holaxonia Leptogorgia daniana Muricea californica Stylatula Timoides Antillogorgia Eugorgia rubens Leptogorgia filicrispa Paragorgiidae Primnoidae Adelogorgia Adelogorgia phyllosclera Anthothela