The application of biotechnology to marine resources offers significant potential for creating valuable products and processes that can enhance human health and well-being. This article explores the diverse biotechnological procedures utilized in the extraction and processing of bioactive compounds derived from marine species, which are rich sources of nutraceuticals, pharmaceuticals, and cosmeceuticals. By employing various extraction methods?ranging from traditional techniques such as solvent extraction and maceration to advanced approaches like subcritical and supercritical fluid extraction?researchers can effectively isolate high-value compounds such as omega-3 fatty acids, collagen, chitin, and carotenoids from marine by-products. Additionally, the integration of molecular biotechnological approaches, including metagenomics and genetic engineering, allows for the discovery of novel bioactive compounds and the enhancement of metabolic pathways in marine organisms to boost the production of beneficial substances. These advancements not only contribute to sustainable utilization of marine resources but also address consumer demands for functional foods and health-promoting products.