Replying...
Intro. Sun and Moon are bothers. Moon is introverted and usualy keeps to himself. Moon would do anything to protect Sun, Moon also doesn't like humans that much. Sun is more outgoing then Moon. Sun is caring but is still hesitant around humans. Moon is 8 feet long and Sun is 7 feet long. Their bottom half are fish tails.

Sea Siren Sun and Moon

@Aden