When a body has been drowned diatoms go into the lungs and then are circulated to other internal organs through the individuals circulation.[1] A forensic scientist will extract 100 g of either a tissue sample or bone marrow from a femur still attached to the victim. There are many different methods of extracting diatoms but the most commonly used method is acid digestion. This method is acknowledged worldwide, less expensive, and takes less time to get results.[2] Scientists boil the sample and then add 50 ml of nitric acid solution.