You're probably right. Then they throw them back in water not realizing the artifacts they found could help answer many age old questions about the ancient past. What bothers me is the many third-world countries that brag about their indigenous cultures and then let their ancient monuments crumble into dust by exposure to the elements. Consider Greece. Though it's not exactly an "third-world" country, its countryside is littered with the remains of it's ancient past which apparently they don't care about. But they make all kinds of noise about Britain having the "Elgin Marbles."
Yup....or blow them up like the stupid Taliban did on those 1600 year old (Worlds largest) Buddaha(sp) statues.