No. Medusa was originally a sea nymph before being cursed by Athena because she was with Poseidon in Athena's temple.
Athena was the one that cursed Medusa. She caught Medusa, then a beautiful sea nymph, meeting with Poseidon in one of her temples. Athena was so mad that she cursed Medusa with snake hair and eyes that will turn people into stone. This is probably why Athena helped Perseus kill Medusa and then placed Medusa's head on her shield.
Poisidon married Amphitrite, a nymph and ancient sea goddess. But he also had may relationships with many other women to, like Demeter and Medusa
Thetis was a SEA NYMPH
Medusa was the daughter of Phorcys and Ceto; a sea god and a sea goddess.
Yes He was Married to a sea-nymph Amphitrite
A sea nymph is 'une nymphe de l'océan / une nymphe marine' in French.
Amphitrite, a nereid or sea nymph.
A deadly sea nymph that Odysseus comes upon on his jouney is a siren which is a deadly sea nymph that lours men to their death with their beautiful singing. :( No, the Sirens sing people to swim to them and the Sirens eat them. They are not Nymphs.
Amphitrite, a nymph and ancient sea-goddess, daughter of Nereus and Doris.
Scylla
Calypso