This is from the City of Myrtle Beach FAQ page:
Q: Can I fish on the beach, and do I need a license?
A: Yes, you may fish on the beach, but South Carolina requires a license to fish from the surf. No license is needed to fish from a public fishing pier. Here are the rules:
(1) a resident shall purchase an annual recreational saltwater fishing license for ten dollars, of which one dollar may be retained by the issuing agent;
(2) in lieu of obtaining an annual recreational saltwater fishing license, a resident may purchase a temporary recreational saltwater fishing license valid for fourteen specified consecutive days for five dollars, of which one dollar may be retained by the issuing agent;
(3) a nonresident shall purchase an annual recreational saltwater fishing license for thirty-five dollars, of which one dollar may be retained by the issuing agent; and
(4) in lieu of obtaining an annual recreational saltwater fishing license, a nonresident may purchase a temporary recreational saltwater fishing license valid for fourteen specified consecutive days for eleven dollars, of which one dollar may be retained by the issuing agent.
We do urge you to use caution when surf fishing, especially when swimmers or surfers are in the vicinity. Several piers are available for fishing, too. For more information about fishing regulations in South Carolina, visit the South Carolina Department of Natural Resources:
http://www.dnr.sc.gov/licensing.htmlSource:
http://www.cityofmyrtlebeach.com/faq.html