PISMO BEACH (AP) — A Central California beach outing has turned into a mystery after a bottle turned up with an invitation to a party in Hawaii — four years ago.

David Wilson of Nipomo says he and his family went to Shell Beach on Sunday to fish but it was too rough.

Wilson lost his sandal to a wave, but it brought him something else. While feeling for the shoe, he found a plastic bottle sealed with a cork. Inside was a tattered piece of paper dated 2010 from Maui. It appears to be a hand-written invitation to a birthday party from a little girl named Safina. Her mother’s name is Kim and their last name may be Woodstocker.