Today we visited San Esteban, one of the most magnificent and biologically important islands of the Gulf of California. The island is home to the endemic chuckwallas, spiny-tailed iguanas, black-tailed rattlesnakes, and other reptiles. A cactus species found nowhere else in the world is also located here. Hikes on the island allowed guests and naturalists to discover the wonderful vegetation of the island, including cardon cacti, desert lavender, ragweed, jojoba, and more. On our casual walks, we found several female chuckwallas digging nests as the time for laying eggs approaches. This is a good indication that mating has occurred, and production and recruitment of a new generation of chuckwallas is on its way. Hatchlings and adult spiny-tailed iguanas were also observed on rocks and on the dry inner skeletons of galloping cacti. What a day!