Geography and Ecology
Benito del Oeste (West Benito, 2.6 km²) is the westernmost and largest island of the group. It appears as a plateau with a mound rising 600 ft (202 m) high near the center. A lighthouse tower, 4 m high, stands in the southern part of the island. The main lighthouse, a prominent, 17 m high tower with a dwelling, stands near the northwest extremity of the island. Rocas Pinaculo, two steep-to rocks, lie 1.6 km west of Benito del Oeste.
Benito del Centro (Central Benito, 0.4 km²) 28°18′30″N 115°33′54″W / 28.30833°N 115.565°W / 28.30833; -115.565 and Benito del Este (East Benito, 0.9 km²) 28°18′03″N 115°32′25″W / 28.30083°N 115.54028°W / 28.30083; -115.54028, the other two islands, lie close east of Benito del Oeste and are separated by Canal de Peck, a deep passage just 200 ft (c.65 m) wide. Benito del Este is characterized by four well-defined hills up to 421 ft (c.140 m) high. Benito del Centro is low and flat with a hill 82 ft (25 m) high rising near its eastern end.
The vegetation consists mainly of low shrubs and herbs as well as some large cacti (Cylindropuntia prolifera, C. ramosissima). There are few land animals and no native mammals. Bird are moderately abundant due to the islands' barrenness, but Cassin's Auklet is rather plentiful at breeding time.
Read more about this topic: Islas San Benito
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