Here she is, playing with that same crab. I think he's about had enough and is going for a swim! Ever get your finger pinched by a crab, even one of the little ones?
Wow, it hurts! I used to go to a summer camp as a child in RI, and we would spend hours combing the rocks and tide pools for crabs. We would turn over rocks and catch them as they tried to scurry away...
Occasionally we would catch one and it would get a hold of a finger and pinch hard!
I hope you have a Happy St. Patrick's Day. (The green hat is my tribute to the Day O' Green)