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Old 05 July 2011, 15:20   #1
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Beauleui River Jellyfish

We took a lovely gentle poodle up Beaulieu River on Sunday, which was nice.

While we were stopped, having a little picnic, we were amazed to see literally thousands and thousands of jellyfish swimming past the boat on the their way down the river.

Anyone else ever seen them?

Convinced my brave mate to stick his hand in the water with my GoPro waterproof camera and managed to film some of them.

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Old 05 July 2011, 15:43   #2
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They're moon jellyfish - quite lovely to look at, but will shut down your nearest nuclear power station.

Get used to seeing them; until we all decide overfishing is a Bad Thing, what you saw will become more and more common.

Yes, I am biased; but I live on the Clyde where the commercial white fish catch is a tonnage only slightly greater than zero and large swarms of jellyfish are not unusual...

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Old 05 July 2011, 15:47   #3
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these are Moon jellyfish
they are commonly found in brackish water and shallow water.
I dont know how far up the river you were,
but presumably still in the tidal range?
great shots by the way...
will have to get one of those Go Pro cams
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Old 06 July 2011, 03:34   #4
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I was canoeing down the river one time and we got as far as we were going and as soon as we turned around to go back, these jelly fish were everywhere, they kept getting tangled up in the paddles... was a very long journey back
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Old 06 July 2011, 11:25   #5
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Get used to seeing them; until we all decide overfishing is a Bad Thing, what you saw will become more and more common.
Not sure that fishing is the cause of the situation. Jelly swarms are rather fickle; resulting from a myriad of coincidental environmental factors, often hundreds of miles away. Wind and currents transport them pretty far afield, often in huge numbers.

The moon jellies in the video are pretty benign to humans (clogging of coolant pipes notwithstanding); they sting to feed, but are incapable of penetrating human skin.

Here (US west coast) we've been graced by a heavy influx of Brown Sea Nettles for the past couple of years: they come and go, but when they're in, they're in pretty heavy. These guys do sting (though the effects depend on your sensitivity to the toxin: I feel like I've been insufficiently novocained - locally numb and itchy; my cousin swells up for a week or more unless she takes large doses of antihistamines.)

Attached are a couple of pics of a heavy nettle day taken a couple of years ago. Shot with the wrong lens (not particularly wide angle), looking up from about 70 feet.

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Old 08 July 2011, 06:35   #6
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Originally Posted by BrAinZ View Post
We took a lovely gentle poodle up Beaulieu River on Sunday, which was nice.

While we were stopped, having a little picnic, we were amazed to see literally thousands and thousands of jellyfish swimming past the boat on the their way down the river.

Anyone else ever seen them?

Convinced my brave mate to stick his hand in the water with my GoPro waterproof camera and managed to film some of them.

If you use Facebook, these guys would like your sighting (upload on the map) Welcome to Facebook - Log In, Sign Up or Learn More
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Old 08 July 2011, 09:46   #7
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Oh yeah... Posted video there as well. Thanks

Is there any chance that the jellyfish could cause problems with the water intake on the engine?
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Old 08 July 2011, 11:08   #8
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30 years ago I went to South Uist, from Oban we steamed for about 4 hours through moon jellies and you could not see any water between them. Dont know if it affected the propulsion or not.
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Old 08 July 2011, 12:05   #9
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Is there any chance that the jellyfish could cause problems with the water intake on the engine?
Probably not. They're reasonably fragile, so would probably get torn up, sucked through and spit out..

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Old 08 July 2011, 17:53   #10
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Quote:
Originally Posted by The Grocer
They're moon jellyfish - quite lovely to look at, but will shut down your nearest nuclear power station.

Get used to seeing them; until we all decide overfishing is a Bad Thing, what you saw will become more and more common.

Yes, I am biased; but I live on the Clyde where the commercial white fish catch is a tonnage only slightly greater than zero and large swarms of jellyfish are not unusual...

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so it these that close power station on forth
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