Israelis have been dealing with a seaborne invasion of sorts this summer.
Thousands of giant jellyfish, called warty comb jelly, have been washing up on their beaches, causing discomfort to beach-goers.
The jellyfish themselves pose no danger to humans. But all those eggs in the water can leave bathers feeling a mild sting.
As Al Jazeera's Tom Ackerman reports from Netanya, Israel, they are causing even bigger problems for the country's biggest power station.