Category three — comprises several unrelated species, mobile or not, of various shapes and sizes, that cannot survive without being in water. These are generally either molluscs or crustaceans, including clams, mussels, lob- sters, shrimp, oysters, octopus, scallops, and squid. This group also includes marine mammals that live totally in the sea such as whales and dolphins. The majority of Muslim consumers eat them; however, others consider them either haram or makrooh. Shrimp seems to be in a special category: some only eat them but not the rest of category.