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Coccoliths
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Coccoliths
Scanning electron microscope (SEM) image of coccoliths, these are the limestone scales surrounding the marine phytoplankton coccolithophores
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Alga Algae Algal Calcite Calcite Group Carbonate Carbonate Mineral Celled Chromalveolata Chromista Coccolith Coccolithophore Coccolithophorid Electron Electron Micrograph Eukaryote Eukaryotic Haptophyta Haptophyte Limestone Micrograph Microscope Microscope Image Microscopic Invertebrata
EDITORS COMMENTS
1. Title: A Dazzling Display of Coccoliths: A Microscopic Marvel of the Marine World 2. Description: Witness the mesmerizing beauty of the microscopic world as we delve into the intricacies of coccoliths, the calcite scales encasing the marine phytoplankton known as coccolithophores. Captured through the lens of a Scanning Electron Microscope (SEM), this image reveals a vibrant, coloured array of these minute, algal structures. 3. Background: Coccolithophores are a diverse group of eukaryotic, haptophyte algae, belonging to the Chromalveolata sub-kingdom. They are renowned for their unique ability to secrete calcite plates, known as coccoliths, which protect and provide structure to their cells. These calcite structures come in a variety of shapes and sizes, as evidenced in this micrograph. 4. Significance: The presence of coccoliths in the ocean plays a crucial role in the global carbon cycle. As these microscopic organisms die and sink to the seafloor, their calcite shells contribute to the formation of sedimentary rocks, primarily limestone. Moreover, the coccoliths' carbonate mineral composition makes them an essential component of marine food webs, serving as a primary food source for various invertebrates. 5. Magnification: This stunning SEM image offers an enlarged perspective, revealing the intricate details of these microscopic marvels. The multicoloured appearance of the coccoliths is due to the varying thicknesses and textures of their calcite plates, which refract light in diverse ways. 6. Conclusion: The coccoliths' intricate, colourful structures serve as a testament to the beauty and complexity of the natural world. This micrograph not only showcases their aesthetic appeal but also highlights their importance in the marine ecosystem and the global carbon cycle.
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