A Dwarf Lantern shark is a tiny shark that can glow. It is big as Peso's flipper. In the episode "Octonauts and the Dwarf Lanternshark," this shark has a shell attached to its back. Unfortunately, it got lost by the whale shark swimming nearby. Fortunately, they found him, due to him having flashing lights on his body. They are actually the smallest sharks in the world. It grows to a maximum size of 8 inches.