The Elapidae, or elapids, are a family of venomous snakes. These snakes can be found in tropical and subtropical regions around the world. They can also be found in the Indian Ocean and the Pacific. They are characterized by a set of hollow, fixed fangs through which they inject venom. There are snakes of different sizes, from only 18 cm ("Drysdalia") up to 6 m in length ("King Cobra"). Currently, 61 genera with 231 species are known.