Sightings of humpback whale “super-groups” skyrocket, with researchers documenting a record 304 individuals in a single day off South Africa. Sightings of large aggregations have jumped from 10 to 65 per year in just five years, driven by recovering populations and abundant prey. Scientists say the phenomenon signals a major conservation success, with wider benefits for marine ecosystems through nutrient cycling and ocean health. BBC www.bbc.com/future/article/20260416-the-humpback-super-groups-swarming-the-seas
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