Kamino has an extremely hostile environment, and torrential rainstorms are often in occurrence. When the Second Galactic Survey recorded the existence of Kamino at the end of the Great Sith War, it was unable to breach the atmosphere, for lightning nearly destroyed the survey vessel. Therefore, the Kaminoans remained largely unknown for a vast majority of history.
However, the Kaminoans were able to develop advanced technology, including brain-wave regulators which can alter the mindset of primitive beings. The Kaminoans used these devices to enslave flying beasts that they used for transportation between cities. However, the Kaminoans needed to maintain their ability to breath underwater in order to use these flying beasts, and developed a strong respiratory system. Kaminoans also managed to develop cloning facilities.
Kamino was later discovered by those who conspired to create the Clone Wars, and erased from the databases of the most prestigious libraries, including those on Obroa-skai and the Jedi Archives. The Kaminoans were responsible for the development of a clone army. Since the Kaminoans realized the destruction that they caused, they completely outlawed cloning.
The Kaminoans are led by a prime minister, who is elected when a strong, almost universal, majority of the population supports it. Recently, the prime minister has opened Kamino to several mining factions, which were responsible for development and exploitation of Kamino. The Kaminoans, who refuse to establish contact with either the Empire or the Alliance, tinker with devices that the miners bring to them, and continue working on methods of technology that can further advance the galaxy, hopefully for the better.