🐙 Jellyfish on the Emerald Coast

Meet the jellyfish of the Gulf

Most jellyfish you'll meet around Destin, Miramar Beach and Highway 30A are on the mild side. Annoying, sometimes itchy, but not dangerous. The ones that can really hurt are the Portuguese man o' war and the odd box jelly. Knowing which is which is half the battle, and it's easy once you know what to look for.

Seen a purple flag? That's the signal for dangerous marine life in the water. See one flying and it's worth checking today's flags before you wade in.

🍽️ The mild ones, most of your encounters

Moon jelly is the one you're most likely to meet out in the Gulf around Destin, Miramar Beach and 30A.

Moon Jelly 🥇 most common here

The one you'll see most. Translucent bell with a pink four-leaf clover inside.

Sting: 🟢 mild, minor irritation that fades in minutes.

Cannonball (Cabbage Head)

Round thick dome, short arms, no long tentacles. A leatherback turtle's favorite snack.

Sting: 🟢 very mild, just a minor itch.

Cassiopea (Upside-Down)

Rests upside-down on the sea floor, looking like a brown flower in shallow lagoons.

Sting: 🟢 mild.

Blue Button

Not a true jellyfish, but a tiny disc-shaped colony. It floats in on winds and currents.

Sting: 🟢 usually none, though it can irritate if touched.

Comb jellies also show up in the wash, and they glow greenish-blue and don't sting at all.

⚠️ The ones to leave alone

Portuguese Man o' War (NOT a true jellyfish)

A siphonophore, a colony that floats together. Purple-blue gas sail on the surface, tentacles trailing up to 30 ft.

Sting: 🔴 severe, very painful but rarely dangerous. Dead ones on the sand can still sting you.

Atlantic Sea Nettle

Bell turns reddish-brown in saltier Gulf water; long tentacles and oral arms. A common source of "random stings."

Sting: 🟠 moderate, a sharp nettle-like sting that's not deadly.

Pink Meanie

Newly recognized Gulf species. Cotton-candy pink, up to 3 ft wide with tentacles to 70 ft. It hunts other jellies.

Sting: 🟠 notable, worse than a moon jelly and it earned that nickname.

Box Jelly (rare, clear the water)

Square-bodied, uncommon here but not to be messed with. Rash can last months.

Sting: 🔴 intense. Rare heart or breathing effects, and there's antivenom. Give it serious distance. Give it serious distance.

🩹 Got stung? Here's what to do

• Rinse with seawater, not fresh water, which can fire off more stingers.
• Carefully lift off tentacles with tweezers or a shell. Don't rub.
• Apply heat, like hot (not scalding) water or a hot pack, to break down the stingers.
• Skip the old myths: no pee, no fresh-water rinse, no rubbing with sand.
• For pain, try hydrocortisone cream, ibuprofen or an antihistamine. A sting rash can last 1–4 weeks.
• 🚨 Call 911 for trouble breathing, chest pain or a severe reaction.

General guidance, not medical advice. Source: Cleveland Clinic.

🤔 Fun facts worth knowing

• What eats them: Leatherback sea turtles are the big one, cannonball jellies are basically their favorite snack. Ocean sunfish (mola) eat sea nettles, and jellyfish even eat jellyfish (the pink meanie hunts moon jellies).
• Dead ones still sting. A jellyfish's tentacles keep firing after it washes up. Leave stranded jellies on the sand alone.
• They're ancient and mostly water. Jellies are often over 95% water and have drifted the oceans for 500+ million years, back before the dinosaurs.
• When to expect them: Most common in late summer, reports start stacking up in August up and down the Emerald Coast, from Destin and Miramar to 30A and beyond.
• Baby moon jellies start life as tiny polyps attached to the sea floor before they become the floating jellies you see.

🔗 Explore more