North Seymour Island was raised from the seabed by a seismic event, and in its origins as a seabed, the island rose from its lowest point, with a flat profile, to its highest point reaching only 30 m in height. The cliffs of the small island (1.9 km2) are only a few meters high and form the coastline, where swallow-tailed gulls perch on the ledges. A small forest of silver-gray palo santo trees on the plateau (dry landing on black lava rocks), usually leafless, waits for rain to bloom.
The island is teeming with life and you may need to leave room for a sea lion or iguana. Blue-footed boobies nest on both sides of the road (almost 2 km), where pairs perform their courtship dance to mate. Even along the rocky shore, a remnant of white sand remains inland from the sea, and long flocks of seabirds gather for an impressive feeding display. The trail turns inland to discover the largest nesting site in Galapagos for the beautiful frigatebird. These huge dark acrobats have a five-foot wingspan; the males, with puffy red pouches, sit precariously on low bushes to care for their equally large chicks. Herring gulls also nest here and other birds are often seen. Sea lions and endemic black marine iguanas are common, and, with a little luck, land iguanas and sea lions can also be seen.