Gyorm

Gyorms are enemies from The Legend of Zelda: A Link Between Worlds. They are small, narwhal-like creatures that hide inside hard shells and are found withing the Swamp Palace. To defeat them, Link must use the Hookshot to pull them out of their shells and then attack. If he tries to attack a Gyorm while it is still inside its shell, it will hide inside of it and stop moving for a short time.