Project Mariner is an early research prototype developed by Google DeepMind based on the Gemini 2.0 model, aimed at exploring future human-computer interaction methods, particularly within web browsers. This project is capable of understanding information on the browser screen, including pixels and web elements such as text, code, images, and forms, and utilizing this information to accomplish tasks. Technically, Project Mariner allows direct operations within the browser through a Chrome extension, providing users with a novel agent service experience.