Marine Biology 12th edition by Castro

Marine Biology, 12th edition by Castro, offers a clear, engaging introduction to the ocean’s living systems, from coastal habitats and plankton communities to marine mammals, fisheries, and human impacts on the sea. Designed for undergraduate marine biology and ocean science courses, this McGraw Hill text connects organism biology with ecology, evolution, and environmental issues. Students will find accessible explanations of marine classification, adaptations, food webs, and conservation challenges, supported by current examples that show how scientific concepts apply to real marine environments and global ocean stewardship.