A dirty looking cidarid sea urchin on a dead bamboo coral branch. The sea
urchin is a living habitat for small hydroids and barnacles. Why has this
urchin climbed up a dead coral bush?
Image ID: expn5597, Voyage To Inner Space - Exploring the Seas With NOAA Collect
Location: Hawaii, Keahole, Kona Coast
Photo Date: 20150829T213318Z
Credit: NOAA Office of Ocean Exploration and Research, 2015 Hohonu Moana
• High Resolution Photo Available