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Mechanical Organization of Cantileverlike Sessile Organisms: Sea Anemones -- KOEHL 69 (1): 127 -- Journal of Experimental Biology
KOEHL 1 1 Department of Zoology, Duke University, Durham, North Carolina 27706; Friday Harbor Laboratories, Friday Harbor, Washington 98250 Engineering beam theory has been used to analyse the ways in which body shape and elastic modulus of two species of sea anemones affect their mechanical responses to flow.
Anthopleura xanthogrammica is exposed to wave action, but because it is short, wide, and thick-walled, maximum tensile stresses in its body walls due to flow forces are an order of magnitude lower than those in the tall, slim, thin-walled, calm-water sea anemone Metridium senile .
Several general principles of the organization of cantilever-like sessile organisms are revealed by this study of sea anemones.
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SEA ORGANISMS

The World of the deep-sea organisms
In the areas of structure and biota analysis of communities and examination of the dispersal of chemosynthetic communities, we continued our survey on chemosynthetic communities in Sagami Bay, the Okinawa trough, and the Ogasawara sea area.
We also conducted a survey on the hydrothermal vent community found at the Daini Kasuga seamount in the north Mariana trough, an important location for studies involving the biogeography of the western Pacific.
At the Daini Kasuga seamount, we discovered a hydrothermal vent community at the peak of the seamount, at a depth of approximately 400 meters.
The biota resembled that found in the Kaikei seamount of the Ogasawara region.
In our study of the relationship between environmental factors and ecotypes, we conducted research on the breeding habits of Calyptogena and in situ experiments such as growth rate analyses on Bathymodiolus.
In our search for valuable resources, we looked for substances in Calyptogena and Vestimentifera and discovered a substance that suppresses the side effects of antitumoral medication in the organic solvent extract of Calyptogena.
E What is a chemosynthetic ecosystem? E The geological background for a chemosynthetic ecosystem E The characteristics of a chemosynthetic ecosystem E Organisms living in a chemosynthetic ecosystem E Cold seep communities E Hydrothermal vent communities E Whale-carcass communities For our studies of mid-sea ecology and the structure, biota, and biomass of the mid-sea, we carried out dive surveys in the Ogasawara sea area and in Japan trench, discovering new species and observing their behavior.

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Extreme organisms - deep-sea - 30 March 2002 - New Scientist Environment
New Scientist Full Access is available free to magazine subscribers Extreme organisms 30 March 2002 Michael Gross Magazine issue 2336 BEING boiled alive, baked under a desert sun, chilled to the bone or bathed in acid-it's our idea of hell.
If organisms can thrive under such hostile conditions, the reasoning goes, then maybe life exists elsewhere in the Universe.
Some of the most surprising finds come from the Earth's own final frontier-the deep sea, a place we know less about than the dark side of the Moon.

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Salton Sea Invertebrate Planktonic Organisms
Basin-Delta Mothersite Salton Sea Symposium 2000 Salton Sea Home Page Invertebrates of the Salton Sea Poster Planktonic Invertebrate Organisms of the Salton Sea [Click on genus and species name to reach larger images] Balanus amphitrite saltonensis (larvae) (Balanidae, Cirripedia) This barnacle has a worldwide distribution in warm temperate and tropical waters.
The Salton Sea is the only inland saline lake in the world from which a barnacle has been reported.
Assemblages of live adults and extensive deposits of barnacle shell form major structural habitats for other invertebrate species in the Sea.
Extensive deposits of barnacle shell form major structural habitats for other invertebrates in the Sea.
They are most abundant in the Salton Sea in spring and fall (see Graph.
Apocyclops dengizicus (Cyclopidae, Copepoda) This is the only cyclopoid copepod reported from the Salton Sea (Dexter, 1993).
It is present in the Salton Sea year round, but most abundant in the summer ( see graph I).

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