What is "sudsakorn"

Sudsakorn (Thai: สุดสาคร; rtgs: Sutsakhon) is a fictional character in Sunthorn Phu's story Phra Aphai Mani, written in Thailand during the Rattanakosin period. Sudsakorn, the son of Phra Aphaimani and a mermaid, was born at Ko Kaeo Pisadan without ever having seen his father. His adventure begins after he grows up and begins to seek after him.