Currently, there are about 30,000 species of spiders alive today. A few hundred of these spiders are called mygalomorphs. They are hairy, large, and are active, and you know these creatures as tarantulas. You can find tarantulas on all continents except Antarctica, and there are about 30 different kinds of tarantulas in North America. These tarantulas can be found in the southwestern United States, and in Mexico and Central America.