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These Web pages (among others) were used to derive search terms: Jellyfish - Wikipedia, the free encyclopedia Most hydromedusae and scyphomedusae that live in coastal habitats find themselves on the bottom periodically, where they may stop swimming for a while, and certain box jellyfish species also rest on the sea bed in shallow water. Fossil Record Reveals Elusive Jellyfish More Than 500 Million Years Old -- ScienceDaily The specimens are about 200 million years older than the oldest previously discovered jellyfish fossils. ... The specimens are about 200 million years older than the oldest previously discovered jellyfish fossils. Facts About Jellyfish - Animals and Wildlife Their senses are primitive and consist of a neural net, eye spots that can sense light from dark, and chemosensory pits that help them identify potential prey. ... This group of animals, all radially symmetrical, includes corals, sea anemones, hydras, and jellyfish. Jellyfish Take Over an Over-Fished Area : NPR Critics of the global fishing industry say that overfishing has damaged the ecosystem there, causing the bloom. ... Critics of the global fishing industry say that overfishing has damaged the ecosystem there, causing the bloom. How do jellyfish reproduce? What effect does their sting have on humans? What's the difference between red and translucent jellyfish? - Scientific American The jellyfish sting actually comes from tiny nematocysts, ... When triggered, these cells eject poison-tipped barbs that help the jellyfish catch food in Bigger jellyfish inheriting the ocean, study finds - World news - World environment | NBC News Swarms of jellyfish threaten power to Israeli cities BBC News - Jellyfish 'can sense ocean currents' It remains unclear just how the jellyfish sense changes in water, the paper in Current Biology journal says. ... One ultimate aim of studying and tracking swimming jellyfish is to improve the forecasting of jellyfish blooms, which have increased in frequency over the past decade, disrupting fisheries and stinging swimmers. World's most invasive jellyfish spreading along Israel coast - Israel News | Haaretz The warty comb jelly poses no threat to humans. ... The species, known as the warty comb jelly (Mnemiopsis leidyi), is considered one of the world's most invasive species. NSF - Jellyfish Gone Wild * Crippling industrial operations: Jellyfish have recently disrupted the operations of marine diamond mining facilities in Namibia, desalination plants in Iran and various large ships around the world by clogging intake pipes carrying sea water. ... * Damaging fishing operations: Jellyfish have interfered with fishing operations in world-class fisheries, including the Gulf of Mexico, the Black Sea and the Bering Sea by: 1) busting fishing nets; 2) poisoning and crushing captured fish; 3) consuming fish eggs and young fish; and 4) clogging the engines of fishing boats. Japanese fishing trawler sunk by giant jellyfish - Telegraph The last time Japan was invaded on a similar scale, in the summer of 2005, the jellyfish damaged nets, rendered fish inedible with their toxic stings and even caused injuries to fishermen. ... Japanese fishing trawler sunk by giant jellyfish Theyre Taking Over! by Tim Flannery | The New York Review of Books As they grow, the polyps develop into a stack of small jellyfish growing atop each other that look rather like a stack of coins. ... As the oceans warm, the tropical box jellyfish and the Irukandjis are likely to extend their ranges, while other species will benefit from the lowered oxygen levels that warmer waters contain. BBC - Future - Jellyfish blooms creating oceans of slime Some believe that population explosions result from overfishing of their dining competitors and predators, which include more than 100 species of fish, and animals such as turtles. ... The problem is that no one really knows what causes the blooms. Are nuisance jellyfish really taking over the world's oceans? | EurekAlert! Science News Such fossil and documentary evidence as is available indicates that occasional spectacular blooms of jellyfish are a normal part of such organisms' natural history, and may be linked to natural climate cycles. ... They point out that changes in populations of jellyfish and similar sea organisms do have important consequences for local marine ecology and could be affected by human activity. Have jellyfish come to rule the waves? | George Monbiot | Environment | The Guardian Those were thrilling moments : pulling up strings of fish amid whirling flocks of shearwaters, gannets pluming into the water beside my kayak, dolphins breaching and blowing. ... The Israeli branch of Jellyfish Action pulled off a similar feat at the nuclear power station in Hadera this week. |