SIRENA

  Sirena is a mermaid, a sea creature with a human upper body and a fish tail instead of lower extremities. They attract fishermen and tourists. Sirenas are reportedly often seen ashore by fishermen, especially in the towns bordering the Pacific Ocean.

(October 2013 https://sites.google.com/site/catmonanonsabako/tradition/customs-and-beliefs/folklore)

References:

•           Philippine mythical creatures – Wikipedia