I have not, but my mom used to surf with wild dolphins here in CA. One in particular accepted her as part of the pod and lifeguards told her he would swim up and down the beach looking for her when she was due to arrive. When she was late, he would swim up and chide her until she apologized. One time, he got between her and a shark and drove it off.
Personally, my only experience was at Sea World. I was pregnant and the dolphins would not approach any of the visitors except me, and they kept eyeing my belly. When I asked one in particular if he knew how beautiful he was, he nodded, then rolled over and offered me his belly to rub. it was the most amazing experience. Looking into their eyes - is looking into the eyes of a really old, wise soul.
at 6:32 PM on Jan. 25, 2011