strongGreen Mambas/strong, of the genus emstrongDendroaspis/strong/em, are fast-moving land-dwelling snakes of Africa. ("Dendroaspis" is literally "tree snake".) They belong to the family of Elapidae which includes cobras, coral snakes, kraits and, debatably, sea snakes although these are now classed as Hydrophiidae, all of which can be highly deadly.