What kind of jellyfish is this and where did it come from?
WMUR-TV | Jellyfish Slideshow
WMUR-TV | Beach to Reopen After 150 Stung by Jellyfish
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M$3 Answers
It has drifted down from the Arctic Ocean, as happens from time to time.
"One glimmer of life came into his face for an instant, and he uttered two or three words with an eager air of warning. They were slurred and indistinct, but to my ear the last of them, which burst in a shriek from his lips, were ?the Lion?s Mane.? It was utterly irrelevant and unintelligible, and yet I could twist the sound into no other sense."
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M$
Guessing from the brown color and the large size I am gonna say it is a sea nettle. I am not sure on this though, It seems to have a lot less symmetry and pattern to it. If not I would assume it is apart of the same Scyphozoa, or "true jellyfish" class because they tend to be a bit larger.
http://en.wikipedia.org/wiki/Scyphozoa
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M$
--quote--- Doug Grout, chief of marine fisheries for the state, says it's a Lion's Mane jellyfish, a species rarely seen so far south and in shallow waters. In northern New England, they average 8 feet in diameter and can have tentacles as long as 150 feet. (RYE, N.H. July 22, 2010 (AP))
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Information on Lion's Mane jellyfish (Cyanea capillata)
- It is said that it is the largest among jellyfish
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With tentacles up to three metres long and covered with stinging cells, it's better not to get too close to the Lion's Mane jellyfish. It's body can be up to 200 cm across making it one of the largest species of jellyfish.
The tentacles are arranged in eight bunches, with each bunch containing over 100 tentacles. The oldest tentacles are often coloured dark red. They have a very severe sting that can produce blisters, irritation, and muscular cramp and may even affect respiratory and heart function. Fragments of tentacles, left on buoy ropes for example, retain their stinging power.
This species does occasionally occur in large swarms, largely thought to be due to storms and tides that concentrate individuals together. They are predators, eating zooplankton, small fish and moon jellyfish.
You'll find the Lion's Mane in the cold Arctic and Pacific Oceans, the North and Irish Seas and around the coast of Australia. They are mostly no deeper than around 20 metres.
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The largest recorded specimen, found washed up on the shore of Massachusetts Bay in 1870, had a bell (body) with a diameter of 2.3 m (7 feet 6 inches) and tentacles 36.5 m (120 feet) long.
For more informations: http://en.wikipedia.org/wiki/Lion%27s_mane_jellyfish
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M$
The Post Chronicle reported the jellyfish is indeed a Lion's Mane jellyfish that weighed 50 lbs, had tentacles of about 150 ft. Information I gathered in my search seems to be in agreement with Albanian's comments.