Oceanic Insight explores how generative AI and machine learning can transform one of the planet's most challenging sensing environments: the ocean. Bridging underwater physics with modern AI, the book examines how intelligent systems can perceive, navigate, communicate, coordinate, and adapt despite severe constraints on energy, bandwidth, and observability. From underwater perception and generative modeling to edge AI, autonomous systems, and robust operational architectures, it offers a practical, forward-looking guide to the technologies shaping the future of undersea intelligence and autonomy.