"Kataw" is a word in HILIGAYNON, CEBUANO

katáw - Mermaid, naiad, siren, waternymph.

kataw n supernatural sea creatures with the head and trunk of a beautiful woman and the tail of a fish, which play practical jokes on fishermen, kidnap them, or drive them crazy.
v [A13; a12] for a kataw to annoy a fisherman.
Dúna kunuy nagkataw ni Pidru sa íyang pagpamasul gabíi, They say a mermaid took an interest in Peter (played jokes or tried to lure him) last night while he was fishing.
Gikataw nà siya maung nabúang, A mermaid went after him, and thats why he went crazy.