Why don't bones react to water?

Bones don't react to water because they are primarily composed of a mineralized matrix, mainly hydroxyapatite, which is a stable form of calcium phosphate. This structure makes them impermeable to water, allowing bones to maintain their integrity and strength even in wet conditions. Additionally, the organic components of bones, like collagen, do not react chemically with water in a way that would alter their structural properties. Therefore, bones remain unaffected in aquatic environments.