The underwater world is home to many creepy creatures that can surprise new divers. Some of these include jellyfish, with their stinging tentacles, and moray eels, which can appear unexpectedly from rocky crevices. Divers might also encounter ghostly octopuses that can change color to blend into their surroundings. Other strange sights include deep-sea lanternfish, which have glowing bodies. Knowing about these creatures can help divers feel more prepared for what they might encounter underwater.