Terms: jellyfish
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• Science > Biology > Fish and Ocean Creatures > Jellyfish

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1. Jellyfish Churning Oceans (Time.com)
   "Whether or not they contribute to ocean-mixing, it's clear that mushrooming swarms of jellyfish can threaten marine ecosystems by competing with native fish, spread aquatic parasites and contaminate commercial-fishing catches. We could be very close to a stage where parts of the ocean 'go from being dominated by fish to being dominated by jellyfish,' says marine ecologist Anthony Richardson of the University of Queensland in Australia. 'And once we're on this jellyfish joyride, it is extremely difficult to get off.' "

2. Jellyfish Exhibit (MontereyBayAquarium.org)
   "Celebrate the aesthetic delights of living jellies and the magical ways in which jellies and the marine environment have inspired artists in our Jellies: Living Art exhibit. This exhibit includes jellies never exhibited in North America before, like graceful flower hat and blue jellies, innovative artwork and even a walk-through jelly swarm."

3. Jellyfish (DNR.SC.gov)
   "Instead of a brain, jellyfish possess an elementary nervous system, or nerve net, which consists of receptors capable of detecting light, odor and other stimuli and coordinating appropriate responses."
   
   "The life cycle of a typical jellyfish is complex and involves an alteration of generations in which the animal passes through two different body forms."
   
   Provides diagrams.

4. Jellyfish Images (Bing.com)
   Provides over 100 pictures.

5. -11-16-09 A Jellyfish Explosion from Warming Oceans (CBS News)
   "Hearing fishermen's pleas, Uye, who had been studying zooplankton, became obsessed with the little-studied Nomura's jellyfish, scientifically known as Nemopilema nomurai, which at its biggest looks like a giant mushroom trailing dozens of noodle-like tentacles."
   
   "He concluded China's coastal waters offered a perfect breeding ground: Agricultural and sewage runoff are spurring plankton growth, and fish catches are declining. The waters of the Yellow Sea, meanwhile, have warmed as much as 1.7 degrees C (3 degrees F) over the past quarter-century."
   
   "Scientists believe climate change - the warming of oceans - has allowed some of the almost 2,000 jellyfish species to expand their ranges, appear earlier in the year and increase overall numbers, much as warming has helped ticks, bark beetles and other pests to spread to new latitudes."
   
   "The gelatinous seaborne creatures are blamed for decimating fishing industries in the Bering and Black Seas, forcing the shutdown of seaside power and desalination plants in Japan, the Middle East and Africa, and terrorizing beachgoers worldwide, the U.S. National Science Foundation says. " 11-09