Its name was given after an English nobleman called Lord Hugh Seymour. It has an area of 1.9 square kilometers (0.7 mi²) and a maximum altitude of 28 meters (92 ft). This island is home to a large population of blue-footed boobies and swallow-tailed gulls. It hosts one of the largest populations of frigate birds. It was formed from geological uplift. 

North Seymour is a small island near to Baltra, Ecuador. It was formed as a result of the uplift of a submarine lava formation. The whole island is covered with low, bushy vegetation.  The visitor trail on North Seymour is approximately 2 km in length crossing the inland of the island and exploring the rocky coast. 

4 June 2007 – Morning Visit to North Seymour Island

Located slightly to the north of Baltra, North Seymour is a low, flat island, formed as a result of the uplift of a submarine lava formation. It is covered with low, bushy vegetation which contains the largest colony of magnificent frigate birds in the Galápagos. There is also a large population of blue-footed boobies when nesting conditions are suitable. 

PRINCIPAL ATTRACTIONS: magnificent frigate birds; blue-footed boobies

OTHER ATTRACTIONS: endemic palo santo (Bursera); swallow-tailed gulls; brown noddies; sea lions; snakes; mockingbirds; fur seals (occasional)

PRINCIPAL PLANT SPECIES: palo santo, salt bush (monte salado); prickly pear (tuna); arrayancillo; Cordia lutea (muyuyo); Scutia pauciflora; Sesuvium edmundstonei; Sesuvium portulacastrum; Triantema portulacastrum; Croton scouleri (chala)