A deep-sea necropolis of whale remains was mapped across roughly 1,200 km of the Diamantina Zone (4,616-7,001 m depth) through 32 submersible dives, yielding 485 whale-fossil sites that include five active whale falls and 476 fossil cetaceans. Isotopic dating places whale-fall occurrence in this region back at least 5.3 million years. Fossils comprise five beaked-whale species plus one baleen whale, and one of the largest modern carcasses was identified as an Antarctic minke whale by earbone morphology and a near-complete mitochondrial genome. The deepest active whale fall was recorded at 6,789 m, extending known depth limits for such ecosystems well into the abyssal-hadal transition.
Carcasses support specialized, high-density assemblages dominated by brittle stars, bone-boring Osedax worms, chemosymbiotic bivalves (including Abyssogena southwardae and other taxa hosting sulfur-oxidizing symbionts), gastropods and polychaetes, with local megafaunal densities up to 2,840 individuals m-2. Many recovered species appear new to science; molecular barcodes were obtained for 21 taxa but only one matched known records. Novel observations include sea daisies (Xyloplax) at unprecedented depths and unique brittle-star assemblages confined to bone substrates. These findings extend the biogeographic and evolutionary significance of whale-fall ecosystems and establish certain deep-sea floors as long-term fossil archives for tracing cetacean evolution.
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Margaret Hamilton, who led the software development for the Apollo moon missions, died at age 90. She spent over two decades at MIT and was awarded the Presidential Medal of Freedom for her pioneering work in computer science and engineering. (news.mit.edu)
Emerging economies are rapidly adopting solar power, bypassing fossil fuels at a faster rate than Europe or the US. This shift is significantly transforming their energy landscapes and development trajectories. (dw.com)
Jonathan, a 194-year-old Aldabra giant tortoise, is the oldest land animal on Earth and has lived since before the Civil War. Scientists sequenced his genome to uncover genetic factors behind his extraordinary longevity, revealing unique gene variants related to aging pathways. (404media.co)
Rosalind Franklin was the first to understand the structure of DNA, contrary to some claims made by Watson. Her work was crucial in the discovery of DNA's double-helix structure. (link.springer.com)
OpenAI released a proof of the longstanding Unique Games Conjecture, a major breakthrough in mathematics. The complexity of the proofs has made AI assistance essential for understanding and verification. (scottaaronson.blog)
OpenAI announced a proof of the Unique Games Conjecture, a major breakthrough in mathematics that many experts are still trying to understand. The complexity of the proofs has made AI assistance essential for analyzing and verifying these results. (scottaaronson.blog)
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