The marsh bluet (Enallagma ebrium) is a damselfly species in the family Coenagrionidae.

It is a smaller species of bluets, with a size of 25–34 mm (0.98–1.34 in) in length.

[1] Marsh bluets perch occasionally on vegetation in the area with the wings together.

Males set up territories at choice breeding sites.

They will descend as much as a foot under the water to oviposit in aquatic vegetation.