Once again this summer, media hype is fueling fear over “dangerous jellyfish invasions.” But it’s time to replace fear with knowledge — so we can be less vulnerable and better equipped to protect our seas.

Yes, jellyfish populations can temporarily rise in certain areas. But in most cases, media coverage exaggerates the scale of the phenomenon. With a bit of awareness — like checking wind direction and sea currents — we can easily find jellyfish-free spots for safe swimming.

So what’s behind jellyfish blooms?

Decades of overfishing and the absence of sustainable fishery management. Let’s not forget: we all play a role in the depletion of fish stocks and marine ecosystems — as fishers, traders, or consumers. If we want healthier seas next year, we must take action today to ensure sustainable fishing. That’s where the real focus should be — not on short-term jellyfish panic.

Some jellyfish you might encounter in Greek waters:

Chrysaora hysoscella (Compass jellyfish): Rare, but avoid contact — it can sting.

Cotylorhiza tuberculata: Harmless; often shelters small fish in its tentacles.

Rhopilema nomadica: An invasive species with a strong sting.

Pelagia noctiluca (Mauve stinger): Most commonly linked to jellyfish blooms. These blooms are usually short-lived and localized, triggered by warm waters, calm seas, and a drop in natural predators like sea turtles and tuna — largely due to overfishing.

Let’s remember: we are guests in the sea.

Look, don’t touch. Take nothing from the seabed.

With just a mask and a bit of quiet observation, we can avoid potential risks and discover a world full of life — often unfamiliar, always magical.

Seen jellyfish or unusual marine life?

Send your observations to: observations@archipelago.gr

Big thanks to all the citizen scientists helping monitor Greece’s 18,000+ km of coastline!