This book provides an in-depth overview of marine greens and their environmental and biotechnological applications. It addresses concepts such as the niche adaptation strategies of marine greens in their natural habitats, as well as their global distribution, and factors affecting their distribution and proliferation.Marine greens are posited as an alternative to fossil fuels, mitigating global climate change and thereby fostering future environmental sustainability. In addition, the book explains the remediation of xenobiotics, wastewater, microplastics, marine debris and marine green contamination. Expert authors from around the world explore the industrial and agricultural applications of marine greens in the production of enzymes and marine bioenergy, and what is needed to improve its production potential.This is important reading for government and non-governmental organizations as well as industries and research institutions looking for ways to combat current industrial and environmental challenges.