Allison, a rescued green sea turtle who has only one flipper

Allison, a rescued green sea turtle who has only one flipper, swims with the aid of a fin attached with neoprene at the Sea Turtle, Inc., in South Padre Island, Texas, Wednesday, April 8, 2009. Without the fin, developed at the turtle rescue facility, Allison can only swim in circles. The group had previously experimented with prosthetic flippers without luck.

(AP Photo/Eric Gay)