Biologists and volunteers released 23 of the turtles into the Indian River Lagoon.
The loggerheads had spent the past three years helping federal scientists learn the most effective ways to net more fish and fewer turtles.

Beach, raised them at a Galveston, Tex., laboratory, then used the turtles to test escape hatches in fishing nets and special hooks designed to limit harm to the turtles.
Many sea turtles suffocate and die when they get accidentally caught in shrimp nets and other fishing gear.
The National Marine Fisheries Service requires shrimpers to fit their nets with special hatches that allow sea turtles to slip free.