The bottom residents are more spectacular than ever before.
In a small, high-tech submarine that sinks deeper than Mount Everest, scientists have discovered a thriving ecosystem about 30,000 feet below the surface of the Pacific Ocean.
A Chinese-led research team found it was sprinting through fields of crimson tubes and running through another type of worm that protruded out like a flower that itself was the crust of the Earth.
There were dense beds of clams, each with beds up to nine inches long, with snow-like microbial mats creating etheric underwater dust that was dozens of feet wide.
Dominique Papineau, a senior research scientist at the Chinese Academy of Sciences, told NBC News.
Papineau was among the authors of the study published Wednesday in Nature Journal, adding, “Many Hadal animals from these trenches are spectacular in their shape and colour.”
A 19,000-30,000 feet long wrench is the deepest zone in the ocean that occurs at the edge of one tectonic plate and slides to another. “Long-standing theory suggests that chemical bond-based communities are becoming more prevalent in the Hadal Trench, but few such communities have been discovered,” Papineau said.
Karien Schnabel, a marine ecologist in Earth Sciences in New Zealand, was not involved in the study, but said the team discovered something “really quite unusual.”
“In these particularly deep areas, there were really a lot of signs of life and animals,” she said.
“We don’t necessarily expect to live in these places because these incredible depths are so high pressure,” she said of the creatures.
“The depths investigated here, coupled with the thriving communities discovered and observed distribution ranges, greatly expand the known habitat, depth and biogeographic distribution of so many species,” the researchers wrote.
Because the sun’s rays do not reach these depths, creatures rely on chemical synthesis (the process of converting chemicals into food) rather than photosynthesis.
“These communities are rich in hydrogen sulfide, methane-rich liquids and transported along faults across deep sediment layers within the trench,” the researchers said.
They are also faced with constant crushing pressure of up to 98 megapascals (MPA), which is more than six times the force of a crocodile bite.
The diving for this latest research was conducted in July and August last year by an international team of scientists led by the Institute of Deep Sea Science and Engineering at the Chinese Academy of Sciences.
They investigated the ditches of the Krill Kamchatka, which run from Hokkaido in Japan to the Kamchatka Peninsula in Russia, about 1,300 miles long, and run through the Aleutian trench, which ranges from Alaska and the Kenai Peninsula to Kamchatka.
Schnabel previously conducted a deep sea survey on the same three submarines called Fendouzhe, which were used in this study.
She described her experiences in a sort of maritime submarine adventure that became infamous after one fell apart on a 2023 expedition to the Titanic faction.
“Of course there’s some tension as it hangs above a 10-kilometer hole on the Earth,” she studied New Zealand’s north trenches in 2022 for a trip that is more than 32,000 feet below the surface of the Pacific Ocean.
“There is a small window just 12 centimeters in diameter. You can’t stretch your legs while sitting on a small bench of tiny titanium balls that are only 1.8 meters wide,” she said.
She said she was shocked by what she saw at the bottom of the trench, passing through the submarine’s 4.7-inch window.
“When I started to descend and actually settled down on the seabed, I was unsure of seeing how many lives and animals there were,” she said.
There was little doubt that life could exist at these depths, but what surprised the researchers was the abundance of ecosystems they found.
The findings “challenge current models of life at extreme limits” and show that these ecosystems may be more widespread than previously thought.
