"Benthic biodiversity across hadal seascapes is controlled by an interplay of factors, including depth, nutrient
availability, seismic disturbance and resulting habitat structure over multiple scales."
"The significant finding of this work is that A. gigantea is a single, globally distributed deep-sea amphipod species. Here, we show that the ‘supergiant amphipod’, is now known from 75 sites, spanning the Pacific, Atlantic and Indian Oceans, with a depth range of 3890–8931 m."
"Using baited camera landers at depths of 4500-6300 m in the Pacific Ocean, we observed multiple instances of backward swimming using reverse undulation of the slender body in four species: the cutthroat eel Ilyophis robinsae, abyssal grenadier Coryphaenoides yaquinae, and cusk-eels Bassozetus sp. and Barathrites iris".
" The Indian Ocean is the third largest of the world's oceans, accounting for ~20 % of the global marine realm. It is geomorphologically complex, hosting a wide variety of ecosystems across basins, trenches, seamounts, ridges, and fracture zones".
"The observation of singleton or rare species in the deep sea is extremely valuable for gaining a census of biodiversity. At hadal depths (> 6000 m), these records provide a more complete picture of the vertical distribution of fauna".
"A macrourid, Coryphaenoides yaquinae sp. inc., was observed to be attracted to bait and exhibiting normal foraging behaviour during a period of 80 min within view of a baited video camera on the sea floor at 7259 m - the deepest ever observation of a fish species with a swim bladder".
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