Marine Genomics can possibly enhance our ways of life and thriving, and to help with administration and sustainable management of the marine environment. This focus of most genome inquire about is on the nuclear genome, however mitochondrial genomes have been incredibly helpful for the identification of fish species and populaces. Marine microbial accumulations are various and exclusive, and the challenge is to discover what functions are played by these microorganisms. To give satisfactory tools to marine biologists, such as entire genome sequencing and functional genomics, for example, evolutionary tree of marine organisms. Genomics is a highly dynamic research field. Thus, rapid advancements in genomics can tolerate new prospects for applications in marine environment, especially in the regions of Fish genome resources preservation and genetic improvement.