The marine environment and coastal ecosystems are critical links in the sustainability of earth life, such as for mollusks, crustaceans, and other fisheries species, and will play an important role in ecosystem services in the future. Meanwhile, the climate change scenario is having a severe impact on these natural resources, as well as their food supply and production. Because of the vast amount of literature available on online academic databases, scientometric methodologies may benefit from identifying research gaps and potential future fields of study. This book evaluates the climate risks to various types of marine life. The authors navigate through the narratives of ocean researchers, conservationists, and communities, each of whom shares their recent research and perspectives on the challenges of climate change. The book is also a call to action, highlighting the critical importance of understanding, mitigating, and adapting to the effects of climate change on marine environmental ecosystems. From university initiatives to global collaboration, this scientific book sheds light on the current situation of climate change on marine resources, offering a glimmer of hope for ocean sustainability. This book on marine life in a changing climate is not confined to the blue horizon. The next volume of this book not only covers the literature of this book but also delves deeper into the current research and challenges of our ocean in a constantly changing climate.