The governing body of any municipality or county on the Mississippi Sound having located therein a United States Department of Interior and wild life service facility are hereby authorized either severally or jointly to contribute to the cost of the construction and erection of a marine museum for the purpose of displaying aquatic products available in the Mississippi Sound and in the Gulf of Mexico. However, the United States Department of Interior shall contribute at least fifty percent (50%) of the cost of the construction and erection of such marine museum.