Submersible drones, also known as underwater drones or remotely operated vehicles (ROVs), are robotic devices designed to operate underwater. They are equipped with cameras and sensors to explore and gather data from oceans, lakes, and rivers. These drones can be used for various purposes, including marine research, underwater inspections, and search-and-rescue missions. These drones are typically controlled remotely by operators on the surface, allowing them to navigate and capture images or videos of underwater environments. Some submersible drones are also autonomous, using pre-programmed routes to collect data without direct human control. Their versatility makes them valuable tools in fields like marine biology, oceanography, and environmental monitoring.