The Goddess of Fire and Earth were stripped of their divinity. Despite their divinities being stripped their souls is still that of a God, unless Avel possesses something that could kill a God, he wouldn't be able to take the lives of Adara and Ertha. To prevent others from knowing his other plans Avel had imprisoned the two in some underground dungeon.
After throwing the two goddesses to the dungeon, Avel went out to look for Mayim, the God of Water. Coming over to the water palace under the sea, Avel was welcomed by the scene of quiet underwater scenery. The figures of playful water base races like sirens and mermaids were not found. There aren't even any soldiers protecting the palace. No servants nor even a slight sound except of the waves flowing.