How Ocean Currents Circulate Trash Around the World

CrashCourse

This episode of Crash Course Geography explores the complex systems of global ocean circulation, using the North Pacific Garbage Patch as a compelling case study. Host Alizé Carrère explains how wind patterns, solar radiation (insolation), and water density differences drive both rapid surface currents and the slow-moving deep ocean "conveyor belt." The video breaks down the physics behind why trash accumulates in specific zones called gyres, debunking the common myth that the garbage patch is a solid island of trash and instead revealing it as a soup of microplastics.