Plants serve a crucial role on Earth––they provide the oxygen that sustains other life forms! Sea plants are no different, as both sea plants and algae provide nutrients to animals that eat them and create oxygen for animals to breathe. Readers learn about the processes sea plants and algae undergo, as well as the harmful impact global warming is having on these creatures. Vivid photographs are paired with helpful text and questions to provide an immersive and understandable experience for readers, while also furthering their knowledge of the STEM curricula.