A submersible is a type of watercraft designed to operate underwater. Unlike submarines, which can travel long distances and remain submerged for extended periods, submersibles are typically smaller and used for specific missions, such as research or exploration. They are often deployed from a surface vessel and can reach significant depths to study marine life, underwater geology, or shipwrecks. Submersibles are equipped with various tools and instruments, including cameras and robotic arms, to assist in their tasks. They are commonly used in scientific research, such as by organizations like NOAA or for deep-sea exploration, including missions to the Titanic wreck site.