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The Amazon river dolphin (Inia geoffrensis), commonly recognized as the pink dolphin, is a freshwater cetacean native to the river networks of the Amazon and Orinoco Basins in South America. It is one of the most distinctive river dolphins in the world, largely due to its softly blushed coloration, flexible body structure, and complex behavioral patterns. This species belongs to the family Iniidae and represents one of the most iconic aquatic animals of the Amazon rainforest ecosystem. Taxonomy and Evolution The species is grouped under the order Cetacea, and its evolutionary history suggests a lineage that diverged from marine dolphins millions of years ago, adapting gradually to inland waterways. Its skull structure, asymmetrical rostrum, and mobile neck vertebrae indicate long-term specialization for life in silty, obstacle-filled rivers. Physical Description Amazon river dolphins exhibit a highly unusual body form when compared to oceanic dolphins. Adults possess a long, narrow sno...