Very little is known about the biology of the pygmy devilray but mating is known to take place in shallow water, with each litter usually comprising just one offspring (1). In a form of reproduction known as ovoviviparity, the embryo develops in a membranous egg within the mother. After hatching, it remains in the mother and continues to be nourished by the yolk sac until it is ready to emerge. Like other mobulid species, adult and juvenile pygmy devilrays feed on plankton and small fish (1) (5).