The island is one of the early Pacific contact sites between the East and the West.

One example is the Bukilat Cave which is a large natural cavern in the southeastern part of the island.

It was used as a shelter for Poro Island residents during the Japanese occupation of the Philippines during the World War II era.

Buho Rock is a hole in a cliff wall said to have been formed when a Spanish warship mistook it for an enemy ship in the mist and fired cannon into it.

The language is classified as distinct from Cebuano (Bisaya) by the Komisyon ng Wikang Filipino and is vital to the culture and arts of the Porohanon people.