Leviticus 11:10-11

¹⁰And all that have not fins nor scales in the seas, and in the rivers, of all that move in the waters, and of any living thing which is in the waters, they shall be an abomination unto you:

¹¹they shall be even an abomination unto you: ye shall not eat of their flesh, but you shall have their carcases in abomination.