Sea nymphs are deities from Greek mythology. The reside in the seas and are described as playful and sexually attractive young women that were loved by many. Sea nymphs usually have beautiful singing voices and are said to protect sailors at sea as opposed to sirens that were said to lure and kill them.
Chad: Dude ive heard sirens are these hot chicks in the sea that sing to seduce sailors.

Jason: Yea but, like, then turned into a monster and killed them. Nah, sea nymphs are way cooler.
by cryptic feline March 23, 2019
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Sea Nymphs are amazing creatures that are in the sea and they pwn mermaids. End of story.
Sam: I LOVE MY MERMAIDS.

Becky: MY SEA NYMPHS WILL PWN YOUR MERMAIDS ANY DAY.

Sam: Dawww.
by Sea Nymph King January 23, 2010
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