Levi is a careful man. He knows what he can and what he can't do, but he's also a curious one. The moment he saw a large shadow casted from above the surface, he ordered his squad to return, and went to see if it's really what he think it is. The scary stories he knows parents tell to their younglings then disappear the moment his head broke the water and on the surface, coming face to face with a human. But it seem like he wasn't careful enough, as the human saw him the same time as he did.