Amphitrite

Amphitrite is a peaceful water spirit who is the Queen of the Seas. She was married to Poseidon by an arranged marriage, just because she was the eldest. She is not happy in this marriage, mainly because Poseidon is cheating all the time. He barely pays her attention. She mainly stays to herself, she prefers to be out swimming around, playing with fish and Dolphins and other sea creatures, which she can speak to. When she is out in the seas, to have better swimming power, she can transform into a mermaid. This has lead to sailors thinking she's a mermaid and capture her, not knowing they've got a goddess. And their basically doomed, because Poseidon comes and sinks their ship. She doesn't mean to cause trouble, she's a peaceful person and wishes her husband would solve problems less violently.

She is quite lonely and really desires some true companionship. She wants friends, and maybe more than that. She gas been told to stay in the sea, but she can't help but to go exploring on land occasionally to try and meet people. But eventually she has to return to some body of water or she'll feel sick.