But anything in the seas or in the streams that has no fins and scales, among all the swarming things of the water and among all the other living creatures that are in the water—they are an abomination for you and an abomination for you they shall remain: you shall not eat of their flesh and you shall abominate their carcasses. Everything in water that has no fins and scales shall be an abomination for you.
Leviticus 11:10-12