When does SC jellyfish season start for Hilton Head? Sooner than you may think
If you’re planning a beach vacation soon, make sure not to forget about the different kinds of ocean life you may encounter on your visit.
For Hilton Head beachgoers, jellyfish are one of the first ocean creatures seen swimming around, with them often popping up in the waters between March and April.
According to Mike Wagner, spokesperson for the Shore Beach Services of Hilton Head, “mushroom jellyfish are the first kinds we see, and they typically arrive in March, but they don’t sting.”
These are also the most common kinds of jellyfish you will see washed up on the shore.
What do mushroom jellyfish look like?
Mushroom jellyfish live up to their name. They are typically smaller and rounded in shape. Their coloring varies from browns to yellows and even white; some even have spots on their tops.
When do the stinging jellyfish arrive?
According to Wagner, the main jellyfish season falls within a varying six to eight-week period in June and July.
Jellyfish love the warm water just as much as beachgoers do, meaning the peak beach season is prime time for jellyfish to vacation too.
The most common types of jellyfish that Shore Beach Services sees are sea nettles and sea box jellyfish.
“While they do sting, these jellyfish are easier to spot because they are usually bright blue or white,” said Wagner.
Moon jellyfish are also common in the Hilton Head waters.
What do Sea Nettle Jellyfish look like?
Sea nettle jellyfish are white or blue in color in Hilton Head area waters, but their coloring can vary depending on where you go. They usually have a rounded top and are easily identifiable by their longer tentacles.
What do Sea Box Jellyfish look like?
Sea box, or sea wasp jellyfish, are identifiable by their box-shaped tops. They are also blue, white and even transparent in color. They also have longer tentacles, but the shape of their tops is the best form of identification.
What do Moon Jellyfish look like?
Moon jellyfish are small and rounded, with short, small tentacles that are hard to spot. They are translucent in color and can be harder to see.
How can Shore Beach Service help?
If there is high activity or a large volume of jellyfish, Shore Beach Services flies a purple flag on the flagpoles and on the red Beach Patrol trucks.
Wagner also noted that just because there is a high volume of jellyfish in one area, it doesn’t mean that jellyfish are at every beach.
How to treat a jellyfish sting
If you do have the unfortunate experience of getting stung, here is what lifeguards from Shore Beach Service recommend:
Rinse the sting area with ocean/salt water. The salt water helps to remove the sting cells.
Continue to rinse with salt water until the stinging and discomfort subsides.
If you notice a tentacle is still stuck on you (which is rare), let a lifeguard know and they will remove it with gloves.
Seek medical attention if your sting worsens or you have an allergic reaction. If this happens, you can let a lifeguard know and they can call an ambulance for you.
Lifeguards with the Hilton Head Shore Beach Services do not recommend using fresh water to ease the sting, as the fresh, cold water can actually make the sting worse.
During the peak summer season, lifeguards from Hilton Head Shore Beach Services patrol all areas if the beach and have more than sixty lifeguard personnel at various locations. You can view the map of all lifeguard locations here.
Lifeguards are available to assist in first aid, ocean rescue, missing persons, beach-specific questions or any other questions you may have about the island. Each lifeguard is equipped with two-way radios for communication to all points on the beach. These radios also have a direct line to the 911 dispatch office.
To learn more about Shore Beach Services and how to stay safe on the beach, you can visit their website.
This story was originally published March 7, 2025 at 6:00 AM.
