On Saturday morning Penny Palfrey went for a dip. A little over 40 hours later she emerged after setting the world record for the longest solo unassisted swim. Her 68-mile trek across the Cayman Islands in nothing but a standard swimsuit and goggles bypassed packs of sharks, powerful currents, and unpredictable weather. When she finished her swim last night at 11:11 P.M., her face and tongue were so swollen from the salt water she was unable to speak but she did manage to raise her arms in victory