Gravine Island is a small, sparsely populated island in Baldwin County, Alabama. It is found in the Tensaw River about 4miles north of Interstate 10 and Mobile Bay.
The island is a nesting site for various species of turtle found in and around the Mobile-Tensaw River Delta. The endangered Alabama red-bellied turtle also lays eggs on the island.[1] The island is mostly covered in brush and trees but has about 200 feet of sandy beach at the north end created by dredging spoil[2]
Biologists have spotted nesting bald eagles around the island as well as at other locations in the delta.[3]