Manefish are thought to steal food from or feed on a jellyfish-like animal called a siphonophore.
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William Ward, a professor at Rutgers University, met Douglas Prasher on a jellyfish-hunting expedition in the 1980s.
Dr Richardson said there had been high numbers of jellyfish - the food source of the leatherback - reported in the Irish Sea this year.
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This protein - which is produced naturally in jellyfish - is commonly used in this area of research to monitor the activity of altered genes.
In the showroom you can sit down for an imaginary supper and a jellyfish-shaped "agent" will swim your way that will let you download text and images from the web though we can't honestly picture how this works, or understand why we need Internet access during dinner.
Mr Chesworth said that in his south of England region there was a cast-iron case for designating, among others, Bembridge Levels on the Isle of Wight - home of the stalked jellyfish and Poole Harbour - a key breeding ground for sea horses.
More and more leatherbacks are being spotted around the coast of Britain and Ireland, suggesting the turtles are trawling our waters for their favourite food - jellyfish.
They had giant-jellyfish invasions in 2005 and 2007, and because they've recently been spotted in the Sea of Japan, they're bracing for another, potentially harmful wave this summer.
The engineers used a silicone polymer to build a centimeter-long jellyfish consisting of a membrane with eight armlike appendages.
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Dubbed Jellyfish 45, the home would feature a globe-shaped room fitted with acrylic view-ports below the surface.
Forty-one hours and 49 minutes later, Nyad's team pulled her out of the sea -- battered, delirious, ravaged by jellyfish, and only 50 miles from where she had started.
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Mussels will be on the menu for the next few weeks, before cockles, sprats and spinach will be added to the diet, which is rather more up-market than its usual fare of jellyfish.
Engineers in the US say they have invented a hydrogen-powered robot that moves through water like a jellyfish.
And, secondly -- as for millions of years -- the chance to feast undisturbed on as many jellyfish as a turtle can eat.
Most efforts, including the recent news of a disease-detecting rhesus monkey (bred with a glowing jellyfish gene), focus on improving the characteristics of existing organisms.
She was done in once by an 11-hour asthma attack and was later thwarted by box jellyfish stings.
So moving Jellyfish 45 through the waters with two generators would be easy and energy-efficient.
There are mountains that float, flying reptiles, six-legged horses and strange, ethereal objects that look like jellyfish.
This allowed the populations of plankton-eating fish to stage a recovery and compete with the jellyfish for the zooplankton.
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The hook-heavy foundation of Dog Problems is aided by involvement from power-pop greats such as Steve McDonald (Redd Kross) and Roger Manning (Jellyfish).
Perhaps the ecosystem here hasn't been pushed into an alternate stable state - but in other parts of the world it may still be happening, with jellyfish ruling where fish predators formerly reigned.
The main difference between the two creatures "is that the real jellyfish can go and get nutrients and ours can't, " said John Dabiri, a co-author of the study and a bioengineer at Caltech.
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