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Even though giant manta rays are the largest ray species in the world, a fundamental part of their lives remains obscure: where they give birth. A team of scientists in Mexico has reported the first use of underwater ultrasound scans to detect pregnancies in these animals, a strategy that may help answer that question. https://www.nytimes.com/2026/07/28/science/giant-mantas-pregnant-ultrasound.html #science #ocean #mexico