CreatureCast: A Tale of Two Urchins
By Sofia Castello y Tickell, Robert Lamb, Casey Dunn
Many different species do similar things. The pencil sea urchin and green sea urchin, for example, are both grazers in the coastal waters of the Galapagos Islands.
Published: February 26, 2014 at 5:00AM
via NYT Science http://nyti.ms/1fra35c