But she says, in some ways, she understands the scrutiny.
"People have been trying since 1950 to get across. It did seem nearly impossible," Nyad said. "It better be vetted. But our team is squeaky clean. This swim will the ratified in due time."
Nyad completes historic Cuba-Fla. swim
Diana Nyad has become the first person to swim from Cuba to Florida without a shark cage. Take a look at images from her historic swim.