Communication s with the AUV during the mission can take place via an acoustic modem when submerged or via a radio frequency (mobile phone, WiFi, satellite) when the vehicle comes to the surface. AUV techno logy had an intensive phase of research and development during the 1990s, mostly funded by national defense agencies, and commercial vehicles were not widely available until around 2000. AUVs and ROVs are increasingly used in oceanography because they allow the collection of data that otherwise they would not be able to get it. The development of autonomous underwater vehicles (AUVs) has allowed the automation of many of the tasks originally accomplished by manned vehicles in an underwater environment. Team s of AUVs designed to work on joint missions open up opportunities for new and more complex applications. In the underwater environment, AUV communication, localization, and navigation are considered challenges due to the inability to weaken radio communication and global positioning systems.