Sea Nymph

The Sea Nymph was a water creature that roams the oceans, similar to Nixies. One sea nymph was called by the Lighthouse Keeper to impersonate Phoebe Halliwell after the real one was captured. The sea nymph only appeared in Light of the World.

History
The sea nymph was called forth by the Lighthouse Keeper to impersonate Phoebe Halliwell after the real one was captured. He gave her Phoebe's form and memories with a kiss, but though she had the needed memory, her behavior was anything but similar to Phoebe's. In addition, the sea nymph could only hold her form by staying clear of any form of liquid (tap water, drinks, alcohol, etc.) except sea water.

When Paige Matthews and Piper Halliwell orbed to the cove to find Phoebe, the nymph found out they were on their way and intercepted them there. She pretended to be trying to follow the nixies, who were causing trouble for their friend's wedding.

At the wedding ceremony, the sea nymph persuades a doubtful Lyssa to follow her heart and marry the man of her dreams. During the ceremony, the captured nixies project their power into ice sculptures and water in their attempt to disrupt the sea nymph's form, and, after several attempts, finally succeed. Just as the ceremony is completed, the sea nymph reverts to her natural form, frightening all the wedding guests. She immediately begs the keeper to protect her, but he refuses. Knowing he would kill her, she tried to tell the sisters about the pocket watch that kept him anchored. The keeper hurled a fireball at her and she vaporized instantly.

Appearances
The Sea Nymph appeared in a total of 1 non-canonical novel throughout the franchise.