isaac ohana, thank you very much. >> a pleasure talking to you. >> in louisiana, coastal erosion claimsn average of a football field of land every hour. some native american communities and southeastern louisiana are the hardest hit. special correspondent megan thompson brings us the story of three indigenous communities fighting to save their land. >> she's buried all the way in the back right-hand corner, my grandpa's mom. >> at a small cemetery, devon pays her respects to his native american ancestors. he spent his early years here in louisiana as part of the grand band of biloxi. the tribe of nearly 1100 people has been in the area for centuries. but now he's worried about its future. >> one of the biggest problems, when we have storms, the storm surge it brings will sometimes carry these coffins out and people will have to go out into the water and grab these coffins and bring them back. >> the coffin that was once in this grave has disappeared. some of the tombstones are deteriorating or turned upside down. but the destruction of this final resting pace is one part of a much bigge