Kashrut
Among the numerous laws that form "kashrut" are prohibitions on the consumption of certain animals (such as pork and shellfish), mixtures of meat and milk, and the commandment to slaughter mammals and birds according to a process known as "shechita". There are also laws regarding agricultural produce that might impact the suitability of food for consumption.
United States Navy in Vieques, Puerto Rico
After conducting tests on fish and shellfish, the ATSDR determined that it is safe to eat seafood from all waters and coastal lands around the island of Vieques. Even though several metals were detected in the local seafood, ATSDR concluded that the metals would not pose a health risk even if a person ate fish and shellfish every day for 70 years. No explosives were detected in the edible fish and shellfish that were tested.