PloimaPloima is an order of rotifers, microscopic invertebrates found in marine and freshwater habitats.FamiliesAccording to the World Register of Marine Species, Ploima includes the following fifteen families:AsplanchnidaeBrachionidaeDicranophoridaeEpiphanidaeEuchlanidaeGastropodidaeLecanidaeLepadellidaeLindiidaeMytilinidaeNotommatidaeProalidaeSynchaetidaeTrichocercidaeTrichotriidae