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Jellyfish takeover?

Credit: Jellyfish image via Shutterstock
In 2000, a bloom of sea tomato jellyfish in Australia was so enormous — it stretched for more than 1,000 miles from north to south — that it was even…Read More »

visible from space. It was certainly a bloom that Australian jellyfish researcher Lisa-ann Gershwin won't forget.

While most blooms are not quite that big, Gershwin's survey of research on jellyfish from the last few decades indicate that populations are most likely on the rise, and that this boom is taking place in an ocean that is faced with overfishing, acid rain, nutrient pollution from fertilizers and climate change, among other problems. There have been many reports about jellyfish numbers increasing in the past few years; some researchers think it is part of a larger trend, while others say it may be just a numerical fluke. Most agree, however, that more data is needed before coming to a definitive conclusion.

[Full Story: Are Ocean Conditions Ripe for a Jellyfish Takeover?]   Less «
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