The Green Moray has a compact cylindrical body, with a mouth that opens beyond the eyes and lateral nostrils, which are often tubular. It has strong teeth, sharp or blunt, arranged in one or more rows on the jaws and the vomer. The small gill chambers open internally, and the tongue and pectoral fins are absent. Morays live above all in tropical waters (Atlantic and Pacific Oceans), and feed on octopuses, fishes and crustaceans. Their blood contains a thermolabile poison. They can reach lengths of over 250 cm, and are mainly nocturnal animals, hiding during the day.