Image JM_SAB_MA022. Rock crab on tunicate colony of Didemnum vexillum attached to rock substrate. Seabed of large boulders and cobbles in Sandy Bay off the eastern end of Old Garden Beach, Rockport, MA (approx. 42 deg 39.58 min N lat, approx. 70 deg 36.13 min W Lon). Water depth less than 5 m. Water temperature 14 deg C. June 18, 2006. Observer: Janet MacCausland. Photo credit: Janet MacCausland. Location no. 78. Click here to download image.