Documents the utility of Next Generation Sequencing and RNAseq to a wide array of aquatic environmental and physiological issues as well as to human health. Provides insights into the ways transcriptomics of aquatic animals and fish ecology can contribute to the understanding of human diseases Gives an account of the evolution of the techniques used to determine the transcriptome in crustacean aquaculture. Describes the mechanisms of genetic interaction between different pathogens and the human host and their effects modifying gene expression levels. Intended for undergraduate and graduate students interested in subjects related to physiology of aquatic animals, aquaculture, ecology and phylogeny of fishes, and human health.