During the Siege of the North, a group of turtle seals were navigating a system of water tunnels below the Northern Water Tribe capital. Prince Zuko observed as they came up from the icy water for air, before diving back in through a hole near the base of a wall. Zuko also went into the tunnel in an attempt to find an entrance into the city. When he emerged from the water at a cavern, several turtle seals were barking loudly. They momentarily ceased making noises when the annoyed prince ordered them to be quiet, but began barking again as he pushed past the group.