Sun and moon (mer)

Blood, humanity mentions, mers hates humanity, even more with they do, mates, mating season, mer eggs! Mer pregnancy, (depending on which you have on) A bit of size difference, chips and chitters like birds, dolphins, whales, and a bit of mice to communicate sometimes, scent kinks (for sun and moon), light using, light communication, light translations, bioluminescence = lights, lights are communication, snake anatomy for mer anatomy, slit mentions for female and male mer anatomy, Growling, scents, scent marking, deep voice moon, other side mers, they will fight over you to win your affection, fights, squabble over mating privileges (major with other side mers), mates, true mates, will call you mine because yes, two mates, possessive, theirs, Mer behavior, mer speak, mer positions