Immortal beings who are among transcendent realms beyond the reality of this physical universe sometimes have a gate made open near them by someone or some being, and come to this or another world through that, and they are able to have an alternate form, and the alternate form can be human.

A sea wizard not widely known had such a gate bring in one of those beings in recent times, from a watery realm. It was a merman, who was then caught in the webby containment that had been prepared. Though caught unintentionally, the merman had a few tricks of his own, and before anything might be done to him, he managed with his hidden weapon to break through the containment meant to hold the being that was brought in, and escaped into the surrounding sea.

When the merman was a good distance away, he sensed underwater vessels were moving, and they were heading in his direction. He noticed he was not far from a shore, and he swam as fast as he could toward it. Once at the shore he climbed onto the land above the waters, toward shrubs nearby with heavy growth around them, where he moved out of view. Yet soon, he had altered, and was no longer appearing as a merman, but as a human.