Surfgrass (Phyllospadix scouleri) photographed along the outer coast in January 2012.
P.S. For more information about surfgrass, check out the post called "Seeds in your socks" from 9 April 2014.
P.P.S. Many of you know that I'm from New England and, well...once a Boston sports fan, always a Boston sports fan. With apologies to Matt, I couldn't help posting something green tonight to celebrate the nice win by the Boston Celtics. Way to go, Green Men!