1Marine scientists have returned from an expedition with a trove of discoveries.
2Their six-week survey of a deep ocean trench yielded dozens of unknown species.
3Among them is a translucent fish that thrives at crushing depths.
4Researchers also catalogued corals believed to be several centuries old.
5The team deployed remotely operated vehicles fitted with high-definition cameras.
6These craft endured pressures hundreds of times greater than at the surface.
7Every specimen collected underwent genetic analysis aboard the research vessel.
8Early results suggest some creatures are found nowhere else on Earth.
9The findings carry weighty implications for debates over deep-sea mining.
10Mining firms have long coveted the mineral-rich floor of the region.
11Conservationists argue the survey proves how little we understand such ecosystems.
12Destroying habitats before cataloguing them would be scientific vandalism, one said.
13Industry representatives insist extraction can proceed with minimal disturbance.
14They point out that demand for the metals is driven by green technologies.
15The expedition's lead scientist declined to be drawn into the political fray.
16She stressed that her team's role was to provide evidence, not advocacy.
17Their full catalogue of species will be published in the coming months.
18Several specimens have already been sent to museums for further study.
19A follow-up expedition is tentatively planned for early next year.
20For now, the trench keeps most of its secrets, as it always has.