There are several types of sharks that are commonly found around Hilton Head Island, SC during the summer months. Here are some of the most common ones:

1. Blacktip Shark - These sharks are known for their distinctive black tips on their fins and can be found in the shallow waters around Hilton Head Island.

2. Atlantic Sharpnose Shark - These sharks are small in size and typically feed on small fish and crustaceans. They are commonly found in the nearshore waters of Hilton Head Island.

3. Bonnethead Shark - These sharks have a distinctive head shape, with a flattened and rounded front. They are commonly found in the shallow waters around Hilton Head Island, feeding on small fish and crustaceans.

4. Sandbar Shark - These sharks are commonly found in the deeper waters around Hilton Head Island and are known for their large dorsal fin. They typically feed on small fish and crustaceans.

5. Tiger Shark - These sharks are larger and more aggressive than other sharks commonly found around Hilton Head Island. They can be found in both shallow and deeper waters and feed on a variety of prey, including fish, turtles, and even other sharks.

It is important to remember that sharks are a natural part of the ecosystem around Hilton Head Island and that most encounters between humans and sharks are peaceful. However, it is important to always exercise caution when swimming in the ocean and to follow any posted warnings or advisories.