Once a green world of pleasant forests and plains, Pesmenben III has a soothing, pleasant atmosphere, due to the large variety of flora that grew abundantly on this lush planet. Several areas of jungle dotted the Pesmenben III landscape and, apart from the ice caps at the poles, there was just a single but very large swamp near the southern pole of the planet. A large, yet landlocked ocean covers most of the Pesmenben III equator, home to several hundreds of species of fish. Some of them have been known to grow as large as twenty meters in length. Most notable, however, are the skekfish. These animals live in the ocean, but lay their eggs on some of the lands surrounding the ocean. When the eggs hatch, the hatchlings crawl their way to the water. The Pesmenbian Skekfish has many similarities to the skekfish found on Engebo V.

A species of predator inhabiting the jungle areas was the dringo, an animal that hunts using his sensitive hearing. It howls out at its prey, hoping to scare it into running away. As soon as the prey starts moving, the dringo will be able to track it. It will then pounce on it and use its ferocious jaws to rip its prey open. It is believed that the dringo was not actually native to the planet, but evolved from a few escaped Dark Wolves that were brought to the planet by a Weequay expedition long ago.

Due to its closer proximity to the Pesmenbian sun, Pesmenben III is significantly warmer than Pesmenben IV, with only a minimal winter due to the nature of its orbit.