Image PC_FC_MA001. Tunicate colonies of Didemnum vexillum encrusting and hanging from large boulder; associated with algae. Folly Cove, MA (42 deg 41.217 min N lat, 70 deg 38.533 min W lon. Water depth 2-3 m. July 6, 2012. Identified by P. Colarusso (USEPA). Photo credit: P. Colarusso (USEPA). Map location no. 103. Click here to download image.