Description Histocidaris variabilis observed in deep waters off to Hawaii by NOAA Okeanos Explorer mission (Hohonu Moana Okeanos Explorer Expedition).
Note that the white "galls" on the spines are symbiotic barnacles.Author NOAA Okeanos ExplorerJPG file - 52.04 kB - 600 x 340 pixels
Extra information Original Width: 600 pixels Original Height: 340 pixels