Yes, there are a lot of ocean dead zone more then 400 of them now.
The ocean has different zones that has plants and animals. The area along the ocean floor that consists of sand silt and dead organisms is called the benethic zone.
yah, since they are harmfull to fish and other ocean stuff
Trenches are deep ocean features of subduction zones.
dead things
There are two major ocean zones, Pelagic and Benthic zones. The Pelagic zone is the open ocean and the Benthic zone is the ocean bottom.
pacific ocean
dodo
yes.
Mesopelagic :)
pacific ocean
In terms of biomass, deep ocean habitats are similar to Benthic and Abyssal Zones.