Brittlestar City (2 of 2) (image) Census of Marine Life Caption Brittlestar City. Densely packed brown-black brittlestar species, likely Ophiacantha otagoensis or Ophiacantha fidelis, found living arm tip to arm tip on the sand and cobble substrate of the peak. Credit NIWA ©2008 Usage Restrictions None Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.