The marine Cephalopod Sepiella inermis from Porto Novo waters was investigated for utilization and proximate composition for one year. The protein, carbohydrate and lipid content of the dried edible part was estimated. The percentage of protein 60.85, 35.96 %, carbohydrate 0.20, 0.45% and lipid 11.7, 5.55% were observed in males and females respectively.The marine Cephalopod Sepiella inermis from Porto Novo waters was investigated for utilization and proximate composition for one year. The protein, carbohydrate and lipid content of the dried edible part was estimated. The percentage of protein 60.85, 35.96 %, carbohydrate 0.20, 0.45% and lipid 11.7, 5.55% were observed in males and females respectively.