The landing at North Seymour Island is onto black lava rock. After a short climb, visitors arrive on the island’s flat plateau where a number of sea lions nurse pups and frigatebirds nest. The island is dry, and so the predominant tree is the prickly pear cactus favored by the yellow Conolophus land iguanas that live here in number. The undulating terrain is littered with red-brown volcanic boulders and large male Magnificent Frigatebirds can be seen inflating their vivid red gular sacs in hopes of impressing females flying overhead. At certain times of the year, pairs of Blue-footed Boobies dance here in a ritualized mating dance that reinforces their pair bond and shows off their vivid blue feet. The snorkeling here is well-known for schools of colorful creole wrasses and parrot fish.