Amar Shar, the co-founder of British AI unicorn Wayve, has backed Oshen, a budding startup building miniature autonomous sailboats. The little robots could transform the way scientists monitor everything from ocean temperatures and waves to biodiversity. The Plymouth, UK-based startup was founded last year by Anahita Laverack and Ciaran Dowds, two young engineering graduates at Imperial College London.     The startup is building small solar-powered “seaborn satellites” that sail around the ocean gathering data. The little robots could make marine data acquisition more accessible than ever before.     “We want to do for the sea what smallsats did for space: revolutionise access…

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