This page contains information regarding Star Trek: Discovery, and thus may contain spoilers.
"Oh, in many ways, it is. We live in harmony with each other, in a world without hunger or poverty. The only violence we know is the culling, which Kelpiens have been misled to accept as a mercy by the Ba'ul."
Kaminar was a ringed class M planet located in the Kaminar system. It was home to two sapient species – the warp-capable Ba'ul and the pre-warp Kelpiens. (ST: "The Brightest Star"; DIS: "An Obol for Charon")
In the first century of the 1st millennium BC, Kaminar was sparsely populated. The planet's population was divided into three groups: the Ba'ul, the pre-vahar'ai Kelpien, and the post-vahar'ai Kelpien. The post-vahar'ai Kelpien were the main predatory species on the planet, preying on the Ba'ul. Within eighty years, the pre-vahar'ai Kelpien had either evolved into being post-vahar'ai Kelpien or had died out. Starting in the first century AD, the Ba'aul were being driven to near extinction by the post-vahar'ai Kelpien. Then, there was a shift, wherein the Ba'ul population rebounded, with the post-vahar'ai Kelpien dying out.
At some point, there was a resurrection of the pre-vahar'ai Kelpien. This reborn species had the potential of becoming post-vahar'ai Kelpiens. Their numbers started to increase, yet they were always smaller in number than the Ba'ul. These events were recorded by the alien lifeform known to the Federation as the Sphere. Data from these recordings was later used in the creation of the Kaminar population history by the USS Discovery crew in 2257. (DIS: "The Sound of Thunder")
By the 23rd century, the Ba'ul were a technologically advanced species who required the pre-warp Kelpiens to ritualistically sacrifice themselves to their ships. (DIS: "The Vulcan Hello"; ST: "The Brightest Star")
The planet's sky was dominated by several nearby bodies. Lifeforms on the planet included flying animals. Animal sounds could be heard constantly. The Kelpiens harvested a kelp-like aquatic plant, as well as flowers, including fredalias. (ST: "The Brightest Star")
Background information Edit
The Pocket DIS novel Desperate Hours calls Saru's homeworld "Kelpia". This was later contradicted by another Discovery novel entitled Fear Itself, which first established the planet's name as Kaminar months before the release of "The Brightest Star".