EDIT: Upon further investigation, I think I was looking at the "wrong end".
What looks like the front of a spider may in fact be the "butt" of a crab.
I may have found it, try googling types of "Spray Crabs"
Very similar in design.
This particular one:
"The Tidal Spray Crab, Plagusia depressa, Cherry Grove Beach, SC, 10/07/07. Because the spray or splash zone is only splashed by spray and rarely covered by water, the only marine animals found there are those able to live outside water and while exposed to air. "
How close are you to shore? That would help in identification.
Linear Mode
