Wednesday, July 16, 2008

Long Island Sound Jellyfish

The marine fisheries people at the Connecticut DEP have been getting questions about jellyfish and seeing the stories about them (here's a previous post), so they included some information and charts in their regular water quality monitoring email. The charts get bigger (and therefore comprehensible) if you click on them.

This map shows the places in Long Island Sound where they trawl for zooplankton, and which kids of jellyfish they find at each place. Out east, they get moon jellies; in the far west they get ctenophores (comb jellies); in between they get lion’s mane jellies and ctenophores.

When they catch these animals – gelatinous forms is the general phrase they use – they measure the volume. This chart shows that there are a lot more gelatinous forms the further west you go, and that 2006 was a big year for them. Last year, as we reported, there were virtually none.

This third chart – the 3D one – seems to show that there are fewer jellies now than there were five or six years ago, although I admit I have a hard time reading it.

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3 Comments:

Blogger a. said...

Thank you. While wading at Saugatuck Shores with my son, we saw two small clear jellyfish. I grew up near the Pacific and was interested in the difference in these creatures

7:31 PM  
Anonymous Anonymous said...

Seeing this is a 2008 site, maybe you arwe=e still there. My friend took photos of Lion jellyfish just yesterday ! May 9th 2011. Over 100 within 20 feet! Why would this be?I told her I am also curious..Thankyou for your time if you have an ans. please post. Marcia Wiltsie

6:57 PM  
Blogger Tom Andersen + Gina Federico said...

In Long Island Sound? No idea why they would be there now. I think of them as warm water creatures, but who knows? -- tom

7:26 PM  

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