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However, some studies have shown fish showing a preference for non chemically defended sponges, [50] and another study found that high levels of coral predation did predict the presence of chemically defended species. [51] Glass sponges produce no toxic chemicals, and live in very deep water where predators are rare. [30]
The species ranges from North America to Europe and Asia. It is the most common freshwater sponge in central Europe. [2] It is the most widespread sponge in Northern Britain, and is one of the most common species of sponges in lakes and canals. [3] Spongilla lacustris have the ability to reproduce both sexually and asexually. They become ...
Sponge-like archaeocyathids were common in Nevada. [9] Brachiopods, gastropods, and sponges were also important Cambrian animals. [11] Sea levels around North America dropped at the end of the Cambrian. Ecosystems in shallow water probably devastated. [12] The Cambrian ended with a mass extinction.
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About 311 million years ago, in the Late Carboniferous, the order Spongillida split from the marine sponges, and is the only sponges to live in freshwater environments. [8] Some species are brightly colored, with great variety in body shape; the largest species are over 1 m (3.3 ft) across. [ 6 ]
Kalymnos was the main centre of sponge production in the Aegean, and sponge diving is still a traditional albeit less common occupation of the Greeks on the island, with related exhibitions, along with other local folklore, and three museums about the occupation. 1897 schematic of commercial sponge diving