What kind of sand do hermit crabs use?

Hermit crabs typically prefer fine, dry sand that allows for easy burrowing and moisture retention. Natural substrates like calcium sand or ocean sand are ideal as they provide essential minerals and help maintain humidity levels. Avoiding play sand or silica sand is important, as these can be harmful to their health. Providing a mix of sand and other substrates, like coconut fiber, can create a more enriching environment for hermit crabs.