Sea Elves and Calabay

I've mentioned in the past the Calabay people revere the sea elves and try to live in harmony with them.  To do so, they keep in touch with banner signals from the castle and magical lights from the sea. Once a day lights will appear in the sea to say whether the sea elves are good or not and the castle of Calabay will put up their banners to say they are good.  If either presents a bad sign the other will come to the others' aid.  Though by the time of the High King's Sword the sea elves haven't been seen in a while, the castle still put up the flags each day, though most do not know why they do.  Magical lights have not been seen in generations so most would not know what they were if they saw them.