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They are more-or-less cup-shaped animals, ranging from 10 to 30 centimetres (3.9 to 11.8 in) in height, with sturdy skeletons made of glass-like silica spicules, fused to form a lattice. [ 4 ] [ 5 ] In some glass sponges such as members of the genus Euplectela , these structures are aided by a protein called glassin.
Lake ecosystems are a prime example of lentic ecosystems (lentic refers to stationary or relatively still freshwater, from the Latin lentus, which means "sluggish"), which include ponds, lakes and wetlands, and much of this article applies to lentic ecosystems in general.
Lake Superior is the largest freshwater lake in the world by area and the third largest in volume, behind Lake Baikal in Siberia and Lake Tanganyika in East Africa. The Caspian Sea, while larger than Lake Superior in both surface area and volume, is brackish. Lake Superior's deepest point [4] on the bathymetric map. [1]
Researchers forced to cut short an annual survey of wildlife on a remote Lake Superior island this winter due to unusually warm weather announced Tuesday that they managed to gather data that ...
Isle Royale (/ ˈ r ɔɪ əl /, ROY-əl) [1] is an island of the Great Lakes located in the northwest of Lake Superior and part of the U.S. state of Michigan.The island and the 450 surrounding smaller islands and waters make up Isle Royale National Park.
The female otters, believed to be sisters, arrived at the Aquarium in early 2014. They were captured in live traps near a crayfish farm in Louisiana when they were not yet 2-years-old. Great Lakes Aquarium acquired Agate and Ore through a special program to relocate otters that might otherwise have been exterminated as "nuisance animals".
A glass building facade. Glass is an amorphous (non-crystalline) solid.Because it is often transparent and chemically inert, glass has found widespread practical, technological, and decorative use in window panes, tableware, and optics.
Greenstone or Isle Royale greenstone and Lake Superior greenstone. Turtle back is a name sometimes given because of the overall pattern, particularly in polished pieces, which roughly resembles that of a turtle shell. Uigite is a variety found on the island of Skye off the coast of Scotland.