The hadal zone is the deep ocean with depths exceeding 6000 m. With an area
approximately equal to the size of Australia, but constituting the deepest 45% of the vertical …

No fish have been found in the deepest 25% of the ocean (8,400–11,000 m). This apparent
absence has been attributed to hydrostatic pressure, although direct evidence is wanting …

Abstract The hadal zone (6000–~ 11,000 m deep) arguably represents the last great frontier
in marine science. Although scientific endeavour in these deepest ecosystems has been …

Most of our knowledge about deep-sea habitats is limited to bathyal (200–3000 m) and
abyssal depths (3000–6000 m), while relatively little is known about the hadal zone (6000 …

As we seek to pursue sustainable development, we all need an understanding of the ways–
environmental, social and economic–in which we humans interact with the world around us …

Observations and records for fish exceeding 6000 m deep are few and often spurious.
Recent developments in accessing and sampling the hadal zone 6000–11,000 m) have led …

Abstract Eurythenes SI Smith in Scudder, 1882 are one of the largest scavenging deep-sea
amphipods (max. 154 mm) and are found in every ocean across an extensive bathymetric …

The ecological radiation of amphipods is striking among crustaceans. Despite high diversity,
global distribution and key roles in all aquatic environments, little is known about their …

Organisms of gigantic proportions inhabited the world at a time of a hyperoxic prehistoric
atmosphere (P alaeozoic gigantism). Extant giants are found in cold polar waters, with large …

Hadal trenches, oceanic locations deeper than 6,000 m, are thought to have distinct
microbial communities compared to those at shallower depths due to high hydrostatic …