Yes, it is safe to eat sardine bones. Sardines are small fish that have relatively soft and edible bones. In fact, the bones of sardines are a good source of calcium and other minerals. They are rich in nutrients and can provide additional texture to the fish. The bones of sardines are usually small and delicate, and when cooked, they become even softer. As a result, they are easily chewed and digested. Many people consume sardines with their bones intact without any issues. However, if you prefer not to eat the bones, opt for boneless sardines. They are usually available in some canned varieties.