sad news

[Andykelly]

http://uk.news.yahoo.com/skynews/20071122/...rm-45dbed5.html

[benhben]

Weird. Surely jellyfish dont actualyl go on the attack, more that the current takes them past the salmon farm.

Edited November 22, 2007 by benhben

[Dick Dastardly]

"ATTACK"

[chevin]

Weird. Surely jellyfish dont actualyl go on the attack, more that the current takes them past the salmon farm.

 

Absolutely, that is what makes the dangerous ones such a threat to swimmers. They have no intent to attack and nor to they try to move away from a swimmer; they go pretty much where the tide takes them, though they do have a little control over their direction which I guess they use when they are feeding or getting into deeper water on an ebbing tide.

[Waveney One]

I was lucky enough to have a ride in hoy air balloon over a game park in South Africa a few years ago. One thing that I hadn't appreciated was that the air currents travel at different speeds and in different directions at different levels. To test this, the pilot gobbed over the side and saw where the currents took it. I know that water does travel at different speeds and directions on lakes subject to tow. Presumably the sea is similar. Most of the jellyfishes mobility is vertical so they presumably they utilise the currents moving up and down at will to take advantage of these.

 

How they would know where they were and what the currents were doing above or below them is open to speculation of course.

[Elton]

I swam through a mass of jellyfish once on a deep dive (what is the collective term for jellyfish? Shoal?). It was quite worrying at first, as I only had shorts and a t-shirt on, but once I realised they weren't stingers, it was pretty cool.

 

Luckily, I'm not a salmon

[WickerDave]

(what is the collective term for jellyfish? Shoal?).

Smack, according to the 'Net.

[Dunk Fairley]

I was doing backstroke in a lake in a game park in South Africa a few years ago. I was happilly watching a balloon going overhead, so I shouted up to the occupants, to say hello. Just as I opened my mouth, I was attacked from above by a Jellyfish of all things! Tasted of spearmint though!

Edited November 26, 2007 by Dunk Fairley