A low coral island lies in front of Baclayon, almost a straight line from the town wharf. Reputedly named after the harpoon, pamilac, the island is home to a small and closely knit fishing community. There are three sitios on the island, one facing Baclayon, another amid island, and third on the southern coast. It takes about 45 minutes to get to Pamilacan via pump boat, from Baclayon.

The island has a small triangular fort made of rubble with cut coral blocks lining its portal and windows. Round buttresses support the three corners of the structure, and embedded trusses and a triangular pillar in the center indicate that the fort may have had a second floor of wood. Probably a balcony run around the second floor linking the buttresses which also served as lookouts. While no dates have been established for the fort, it may come from the 19^th century. An indication is a large hardwood cross, now housed in a modern chapel nearby, with an 1800s date carved. This stood near the fort. The fort formed a network with the towers or forts at Loay, Baclayon, Tagbilaran and Panglao.

The sea around Pamilacan is frequented by whales and dolphins. The island is a jump off to an area where at least seven species of marine mammals, including Bryde’s whale and sperm whales, have been sighted. The best whale watching time begins in March until the onset of the rainy season in June or July.