Here are some interesting facts about Atlantic sharpnose sharks:

1. Atlantic sharpnose sharks are one of the most common shark species found along the eastern coast of the United States, including around Hilton Head Island, SC.

2. They are relatively small sharks, typically reaching a maximum length of around 3 feet.

3. Atlantic sharpnose sharks are named for their sharp snouts, which they use to catch small fish and crustaceans.

4. They are also known for their distinctive dark markings, which include spots and bars on their body.

5. Atlantic sharpnose sharks are oviparous, meaning they lay eggs rather than giving birth to live young. Females can lay up to 16 egg cases at a time, which are often referred to as "mermaid's purses."

6. Despite being a common shark species, very little is known about their biology and behavior.

7. They are considered to be of low risk to humans, as they rarely grow large enough to pose a threat to people and generally avoid interactions with humans.

8. Atlantic sharpnose sharks play an important role in their ecosystem by helping to control populations of smaller fish and crustaceans.