Miss. Code § 55-7-3
The governing authorities of any municipality bordering on the Mississippi Sound or Gulf of Mexico in which there is situated and located, in whole or in part, a port or harbor through which commerce flows, and having in its corporate limits one or more industries engaged in the seafood industry, and the governing authorities of any county in the State of Mississippi bordering on the Mississippi Sound or the Gulf of Mexico in which county there is or may hereafter be located a municipality having a harbor or port of entry where commodities are exported to foreign nations and in which county the assessed valuation is more than thirty-five million dollars ($35,000,000.00) and less than ninety million dollars ($90,000,000.00), are hereby given the authority to engage in, either directly or through the commission provided for and designated in this chapter, in cooperation and conjunction with such other agencies or commissions as may be now or hereinafter provided by law, works of internal improvement, and of promoting, developing, constructing, maintaining and operating harbors or seaports within the state and its jurisdiction, and are otherwise vested with full power and authority to do and perform, either directly or through said commission, all of the acts, functions and things set forth in this chapter.
Miss. Code § 55-7-3