Galapagos Island Iguanas Land Iguanas, Lizards, Marine Iguanas. Their tough, reptilian skin can be gray, yellowish, rust or black. The land iguana is considered highly endangered throughout the Galapagos.
Larger males are famous for their offshore swimming and diving abilities.
They can be found as deep as forty feet underwater. An average dive may last from five to ten minutes, with the longest observed at about sixty minutes. Iguanas were probably the first creatures to colonize the Galapagos.