Though some religions frown upon burials at sea, the practice has endured for millennia. In many cases, it is done to honor the wishes of the deceased—but not always. Sometimes it is performed out of necessity, as on ships in wartime. In preparation, the body may be sewn into weighted sailcloth or placed in a casket. If it is cremated, the ashes can be scattered or cast in concrete to act as an artificial reef. Per US environmental regulations, how far from land must full-body sea burials be? Discuss