Jellyfish Stings

How Do Jellyfish Sting?

When a jellyfish's tentacle brushes against a person, it triggers the nematocysts.

The nematocysts release tiny structures that penetrate the skin.

These structures inject venom into skin, causing pain & other symptoms.

Tracks on the skin, a “print” of the tentacles’ contact with the skin

Itchiness, Swelling, Burning Sensation

Throbbing pain that radiates up a leg or an arm

Rinse in hot water to deactivate the stinging cells

Gently remove the stingers

Rinse with household vinegar

seek medical attention promptly if the pain persists or worsens

Why do some jellyfish glow in the ocean?

About 50% of jellyfish produce bioluminescence to defend against predators by startling them with bright flashes.

What causes swarms of jellyfish to wash up on beaches in large numbers?

Jellyfish overpopulation drives them to shore due to food scarcity, ocean currents and environmental stress.