Tens of thousands of giant jellyfish are swarming off Dorset, one of Britain's most popular stretch of coastline.
Thousands of the colorful 1.5 meter long stinging creatures were seen. Unprecedented invasion could be due to overfishing which leaves fewer predators to eat them when they are young and smaller.
The jellyfish may also have overwintered in the depths of UK waters. Often they are spotted from boats in the deeper waters of the English Channel, the Irish Sea and off the Outer Hebrides. But it is rare for them to swim closer to the coast or inland. When the seas warm up in summer and autumn, they breed at a phenomenal rate, creating huge swarms.
Their stings, however, are not strong enough to harm humans.
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