According to marine ecologist Prof. Dror Angel (Department of Maritime Civilizations) while it is natural for Israel to experience jellyfish blooms in the hot summer months, this particular swarm is unusually intense. Climate change and a long, cold and wet winter may be responsible. "The sea gets washed with nutrients during heavy rainfall," explains Prof. Angel. "As a result, jellyfish have more food to feed on, like algae and plankton.” A growing jellyfish population may have a potentially damaging effect on the food web, and negatively impact fisheries and desalination plants.