Guru believed himself to be the last Namek alive until he heard that the son of Katas had made it to Earth safely. One unnamed Namekian, the child of Katas, a gifted child of the Dragon Clan, was sent off to Earth as a child to ensure his survival. In Age 261, a horrible climate shift wiped out all the Namekians except Guru and a few Super Namekians who were exiled before. At one point, they discovered a Super Dragon Ball and shaved off pieces to create the Namekian Dragon Balls which the gods permitted them to keep as they only used them amongst themselves and were a peaceful people. Planet Namek once was a beautiful meadow covered by Ajisa and the Namekians developed a civilization capable of interstellar travel.

The Namekians could use this for their respiration process. As measured by Bulma on arrival, the Namekian atmosphere does partly consist of oxygen. A Namekian year is much shorter than an earth year, at 130 days long, as shown when the Namekians are reviving the Z Fighters who died fighting Nappa. It is possible that the planet is tidally locked to the star group, resulting in the lack of a day/night cycle, with the Nameks living on the daylight side of the planet. Despite this, depictions of the planet show there to be a dark side. Namek has three suns, so it is never night time. It is also home to a host of ambient life, such as fish, frogs, slugs and dinosaurs. The planet had a population of about 100 Namekians at the time of the Vegeta Saga in November of Age 762.

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