Some of the witch doctors prefer to brew potions only on Black Saturday. Like the rest of the country, however, Siquijor is predominantly Catholic. And each church is at least two centuries old. It is separated from the other islands by Tanon Strait in the northwest, the Sulu Sea in the southwest and the waters separating it from Bohol and Mindanao. Three main ports are located in Larena, Lazi and Siquijor.
Inland fishery includes fresh and brackish water.
In most part of the province dry from January to May and wet the rest of the year. Southern most part of the province dry from November to April and wet the rest of the year. Level lands consisting of narrow flood plains and deltas are found in the northern and southern coast. Mt. Bandilaan is the highest peak about 557 meters above sea level in Siquijor. Bolinao clay, Guimbalaon clay, Logo clay, Mandaue clay.