Meet an unlikely climate change hero: the wet, slimy stuff known as seaweed. Imagine forests where you can float weightlessly among schools of fish. Huge green pastures where sea turtles graze. Forests that capture carbon from seawater and breathe out oxygen. The answers to many of our planet's problems may lie underwater, in these forests of seaweed. Celebrated nonfiction author Anita Sanchez takes readers on a tour of seaweed forests, from the Sargasso Sea to seaweed patches off Prince Edward Island, to explore how seaweed supports marine ecosystems and plays a big role in climate change solutions. From reducing methane emissions to advances in biofuels, medicines, and more, seaweed science is at the forefront of innovation.