Scientists have successfully used underwater ultrasound technology to confirm pregnancies in three wild oceanic manta rays off the coast of Mexico. One of the manta rays exhibited no external indicators of pregnancy, highlighting the effectiveness of this non-invasive technique for monitoring marine life. AI
RANK_REASON The cluster describes a new application of technology for scientific research on marine animals. [lever_c_demoted from research: ic=1 ai=0.1]
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