As the island and coastal nations of the Caribbean respond to and prepare for the effects of climate change, tourism has the potential to both exacerbate and mitigate these efforts. In this book, the third of four volumes co-published by CREST and Business Expert Press focused on climate change and tourism in the Caribbean, we look specifically at marine tourism and its connection with ocean health, fisheries, and critical ecosystems including coral reefs. We also consider the important role that marine protected areas can play in preserving coral reefs and other ecosystems, leading to greater resilience in the face of the environmental and economic impacts of climate change. Finally, we look at some examples of how the tourism industry is responding to climate change, using its economic and social capital to foster positive change in the Caribbean and other parts of the world.