The Thunese are a sentient humanoid species native to the planet Thunus.
Physiology
The Thunese are a humanoid species with a very similar physiology to humans. They tend to be around five feet tall on average. The Thunese people do not grow hair on their heads and are bald.
They tend to have flatter faces and wide noses; they also tend to have large round eyes with iris color varying from blue and purple to black and brown. Some of the Thunese population may have subtle ridges on their forehead curving from their nose bridge to the center of their forehead. It is believed that these may have developed as a way to express emotion and is a dominant genetic trait.
They have blue skin, there are slight variations in shade but they all have skin that is some shade of blue. It is believed that they have blue skin because of protective pigmentation in their skin but also because of their blue blood. The Thunese people have dark blue blood due to their blood using hemocyanin, which contains copper, as an oxygen-transporting protein.
Due to the salt and irritating chemicals in the oceans on Thunus, the home planet of the Thunese species, they can handle higher salinity and irritants on their skin than many other species, especially humans, and have developed a tolerance to the irritants in the Thunese Oceans.
The Thunese also have two hearts, one that pumps blood to the lungs to become oxygenated and another that pumps the blood around the body. The hearts are typically positioned under the sternum slightly above the other. They also tend to have a higher blood pressure than other humanoid species and have stronger blood vessels to make up for any danger.
Other Traits
Thunese people can live to be quite old, and on average live up to 250 years old. They mature a bit slower than shorter-lived species, being considered fully matured people when they reach their mid-thirties or early forties even though they reach physical maturity around their twenties.
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