The Sirena is a creature of Philippine mythology and is said to be living under the sea. It is the Philippine version of a mermaid. The Sirena is a mythological aquatic creature with the head and torso of human female and the tail of a fish. The male version of a Sirena is called a Sireno. Sometimes it is also paired with Siyokoy. The Sirena is an engkanto which is classified as one of the Bantay Tubig or the guardians of water. In addition to the Sirena, other examples of Bantay Tubig are Sireno, Siyokoy, Kataw and Ugkoy. Bantay Tubig are part fish, part human water-dwelling engkantos which are the Filipino counterpart of the English merfolk.
- It is also said that the Sirena has a very beautiful and enchanting voice that can attract and hypnotize males, especially fishermen. A Sirena would sometimes sing to sailors and enchant them, distracting them from their work and causing them to walk off the deck or cause shipwrecks. They would sing with enchanting voices while hiding among the rocks by the shore. When the men hear their song they are hypnotized and the Sirena can abduct them. Some old folk traditions claim that the Sirena carry its victims under the sea and offer them to their water deities. Other stories claim that the Sirena squeezes the life out of drowning men while trying to rescue them.
Dugongs, sea turtles, and small cetaceans such as dolphins usually accompany Sirena