Contact: John Delaney
Wildlife Conservation Society
Caption: Ranging between gray and turquoise blue in color, male iguanas become bluer during the mating season.
Credit: Julie Larsen Maher/Wildlife Conservation Society
Usage Restrictions: One time usage only. Must use with the following credit: Julie Larsen Maher/Wildlife Conservation Society
Related news release: Grand Cayman blue iguana: Back from the brink of extinction