i.e. Either of the smaller sort of fishes, or of the greater, which are called here living creatures or beasts, as some of them are called the beasts of the sea by other authors.
Related Commentaries of Leviticus 11:10
Leviticus 11:10
10 And all that have not fins and 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: