World's largest whale graveyard discovered by Chinese sub

An astonishing discovery in the Indian Ocean has revealed the world's largest whale graveyard, a vast expanse of ancient and recent whale carcasses found by Chinese scientists. The site, located at depths of up to 7,000 meters west of Australia, is also the oldest and deepest known of its kind, with fossils dating back an incredible 5.3 million years.

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But discovering a necropolis of this scale was completely unexpected. The size of distribution, the depth and the age range were far beyond anything we had imagined.

Researchers aboard the Fendouzhe submersible were astounded by the scale of the discovery, which spans a 1,200km corridor of bones. They observed a multitude of deep-sea creatures, many potentially new to science, thriving on the whale remains. The findings, published in the journal Nature, suggest these "whale falls" create vibrant ecosystems, akin to those found at hydrothermal vents, and play a crucial role in sequestering carbon in the deep ocean.

Lead author Xiaotong Peng of the Chinese Academy of Sciences noted the unexpected nature of the find. "Discovering a necropolis of this scale was completely unexpected. The size of distribution, the depth and the age range were far beyond anything we had imagined," Peng stated. The team theorizes the area might be a popular foraging ground with a trench that funnels carcasses to the seafloor. Extrapolating from the nearly 500 skeletons found, scientists estimate over 10 million carcasses could lie in the Diamantina Zone, representing approximately 6.7 million tonnes of sequestered carbon.

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The vibrant ecosystems we saw offered a completely different perspective on this otherwise dark and cold ocean floor.

The research also suggests these whale graveyards might act as vital connections between different deep-sea communities. While this is the largest graveyard found to date, the study indicates potential for similar sites off South Africa, the Iberian Peninsula, and the Crozet Islands, based on fossil fragments found elsewhere.

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This provides an immense source of sustenance for animals, similar to how hydrothermal vents create their own ecosystems on the ocean floor.