There are more than a thousand species of scorpion, of which fewer than fifty have venom that is potentially dangerous to human beings. The odds of dying from a scorpion sting are 1 in 300 million. Your odds of dying by falling over in a shower are 1 in 65,000. So if you find a scorpion in your shower, the shower stall itself is still the greater danger. Although they may be dangerous to children or other very tiny people, even the most deadly scorpions have an adult mortality rate around one percent. A reasonably healthy adult would need a suitcase full of scorpions and the willingness to stay still long enough for them to get in a hundred stings in order for the venom to have a fatal result. That would be painful, though. There are better ways to commit suicide.
@Ken Anderson @Shirley Martin The desert area we live in is of course home to scorpions as well as a great variety of other denizens, many venomous, many not. We expected to see them in numbers; in 6 years here, we have seen only one scorpion, which was outdoors, under a flat trash can cover lying on the ground. We think the reason for their relative scarceness is the large number of birds present, such as Roadrunners and such, which likely consume whatever they can catch. OTOH, we have seen quite a few Vinegaroons, large spiders resembling scorpions, but non-venomous, possessed of formidable jaws which can inflict a most painful bite. One was found in our kitchen. "Vinegaroon" is in reality the wrong name for the guys we see: Wind Scorpion is the correct name, sometimes Sun Spider, though they are not scorpions! The true Vinegaroon has a long tail, like scorpions do, but at it's tip is a "nozzle". By whipping it's tail quickly, it emits a stream of vinegar, which is directed at it's prey, to blind it and disable it! Wind Scorpion. Note it's fearsome jaws. Over the legsspan, they are about silver-dollar sized, maybe a bit bigger. Here's one eating a large fly: The Vinegaroon: I have never seen one alive, only pictures. It is said they can spray acetic acid up to 10 feet! Protected species in Arizona, the Gila Monster: "The Gila monster (Heloderma suspectum, /ˈhiːlə/ HEE-lə) is a species of venomous lizard native to the southwestern United States and northwestern Mexican state of Sonora. A heavy, typically slow-moving lizard, up to 60 cm (2.0 ft) long, the Gila monster is the only venomous lizard native to the United States and one of only two known species of venomous lizards in North America, the other being its close relative, the Mexican beaded lizard (H. horridum).[2] Although the Gila monster is venomous, its sluggish nature means it represents little threat to humans. However, it has earned a fearsome reputation, and is sometimes killed despite being protected by state law in Arizona."
The scorpions we had in the Rio Grande Valley of Texas were nearly translucent, at least against the backdrop of the soil there, but they weren't considered to be particularly dangerous.