The freshwater crab genus `` Seychellum '' is endemic to the granitic Seychelles , and a further 26 species of crabs and 5 species of hermit crabs live on the islands .
The freshwater crab genus `` Seychellum '' is endemic to the granitic Seychelles . There are a further 26 species of crabs and 5 species of hermit crabs that live on the islands .