In addition, Mordecai wrote: Sefer Ma'amar Mordechai, a commentary on the Mibhar of Aaron ben Joseph; Derek ha-Yam, dissertation on a passage of the Mibhar to Genesis ix.
In addition to his other writings, Mordecai authored: Book of the Commentary of the Rambam, an examination of the Mibhar attributed to the Rambam; Treatise on the Sea, an essay on a section of the Mibhar dealing with Genesis chapter 9.