The word "oceanids" refers to the sea nymphs of Greek mythology, but there are several synonyms and related words that can be used to describe similar beings. Some of these include nereids, which are sea nymphs who lived in the Mediterranean; Tritons, who were sea gods and sons of the sea god Poseidon; and sirens, who were creatures who used their bewitching voices to lure sailors to their deaths. Other related words include mermaids, who are often depicted as half-human and half-fish; selkies, which are creatures from Celtic folklore that can transform from seal to human; and sea sprites, which are small, mischievous beings associated with water.