Sometimes referred to as the Biotopo Monterrico-Hawaii, this protected area covers some 28 sq. km (11 sq. miles), more than 70% of which are aquatic, including mangroves, canals, or estuaries. The reserve is home to a wide range of fauna, which are best seen by taking a boat tour through the canals. The visitor center on Calle Principal provides basic information and can arrange for a guide. All of the local hotels can arrange a boat tour through the reserve. One recommended local guide is Celso Orantes (tel. 502/5236-7769; email@example.com), who charges Q50 ($6.65/£3.35) per person for a 2-hour boat tour. Nighttime tours to watch the turtles lay their eggs, generally between July and October, are also available.