Tantilla oolitica, known as the Rim Rock Crowned Snake, is a small, slender snake native to the pine rocklands and tropical hardwood hammocks of southern Florida. It is distinguished by its glossy, brownish-black coloration, a faint, lighter band at the neck, and its secretive, nocturnal behavior.

Tantilla oolitica, commonly known as the rim rock crowned snake, is native to the southeastern United States, specifically the southern tip of Florida. This species is endemic to this region, meaning it is not naturally found elsewhere.

The rim rock crowned snake inhabits subtropical and tropical environments, typically found in coastal areas with limestone outcrops. It thrives in pine rockland habitats and is often associated with areas that have sandy soils and abundant leaf litter, which provide cover and hunting grounds for insects and other small prey.

As a fossorial species, Tantilla oolitica primarily occupies underground burrows or hides under rocks and debris during the day. It is a nocturnal snake, emerging at night to hunt. Its diet generally consists of small invertebrates such as insects and spiders. The species plays a role in controlling insect populations within its ecosystem.