Skull tattoos, also known as calaveras or sugar skulls, are a popular style of body art. They are typically composed of an image of a skull or a skeleton, often with other elements such as roses and crossbones. Skull tattoos have been popular for centuries, and they come in a variety of styles. Some skull tattoos are traditional, while others are more modern in style. Skull tattoos are often seen as symbols of death, but they can also represent life and rebirth.