When it comes to colors like green and red, you can probably take a guess at what those colors may indicate about ocean safety at the beach. But have you ever noticed a purple flag on the beach?

Oak Island announced the purple flag will continue through the weekend. According to Oak Island Water Rescue, the flag ...

They don't normally go under water, but their tentacles are so long that you could see 'em a couple hundred feet away." ...

Still, beachgoers were met with yellow and purple beach flags, indicating a medium hazard and the presence of dangerous marine life. Please note: This content carries a strict local market embargo.