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A Swarm of the Sea: Jellyfish Blanket Israel’s Coastline from Ashkelon to Haifa

July 10, 2025 By admin Leave a Comment

A peculiar shimmer now lines the golden shores of Israel’s Mediterranean coast, not from seashells or tide-polished stones, but from the gelatinous domes of thousands of jellyfish that have washed ashore in unprecedented numbers. Stretching from the southern port city of Ashkelon all the way north to the bustling metropolis of Haifa, the coastline is witnessing what marine biologists are calling one of the most intense jellyfish invasions in recent years. The image here captures the essence of this surreal phenomenon: dozens of mauve-colored jellyfish stranded like eerie sea lanterns under the soft hues of a descending sun, each dome glistening with trapped sunlight, their bodies casting soft, translucent shadows on the wet sand.

A Swarm of the Sea: Jellyfish Blanket Israel's Coastline from Ashkelon to Haifa

This is not an isolated incident, nor is it entirely unexpected. Every summer, the warm currents of the eastern Mediterranean draw swarms of jellyfish—primarily the nomadic Rhopilema nomadica, a species originally native to the Red Sea—closer to Israel’s shores. Carried by the Suez Canal and aided by warming waters and overfishing of natural predators, these jellyfish have become a seasonal fixture, but this year’s influx has overwhelmed beaches, disrupted tourism, and even affected coastal power stations and desalination plants that draw seawater for cooling and filtration. Swimmers in Ashdod and Netanya report painful stings despite lifeguards posting warning flags, and cleanup crews in Herzliya and Hadera are scrambling to keep popular beaches safe for the July vacation crowds.

Marine researchers are sounding the alarm about the ecological implications. The overabundance of jellyfish, they warn, is a symptom of wider environmental imbalances—chief among them the decline of sea turtles and other jellyfish predators, combined with the nutrient-rich runoff from agriculture and urban development that has created ideal breeding grounds. In Haifa, experts from the Israel Oceanographic and Limnological Research Institute are documenting the surge with drones and sampling efforts, tracking how far offshore the blooms extend and what patterns may predict their return.

While some beachgoers find the scene almost otherworldly—lines of jellyfish glinting like alien life under the Mediterranean sun—most see it as a pressing challenge. Families with children are staying away, lifeguards are doubling their patrols, and local municipalities are coordinating with environmental authorities to manage both the cleanup and public communication. There is also a growing push for regional cooperation, with Israeli researchers engaging counterparts in Cyprus, Greece, and Egypt to study shared strategies for early detection and intervention.

In the meantime, the jellyfish remain. With each wave, more wash in, littering the tideline with their strange, pulsing bodies. The spectacle is both mesmerizing and menacing—a reminder of the sea’s delicate equilibrium, and of how human hands, however distant they may seem from ocean depths, still tip the balance.

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