Thus, a pronounced impact on benthic and pelagic communities should be expected.
Depleted olivine basalts are associated with radiolarian cherts while most pelagic limestones and cherts are found interbedded with alkali basalts.
Similarly, for the pelagic realm, vertical partitioning of animals with depth will lead to the segregation of parasites among fish hosts.
With continuing subduction the pelagic sediments might have been dragged beneath the accretionary prism leading to compaction and expulsion of large amounts of pore fluids.
Many marine fishes have a larval stage in the pelagic zone before changing habitat to a more bottom dwelling life.
Many marine fishes have long larval phase in the upper pelagic zone before transformation into a juvenile and a benthic life style.
Like living pelagic animals they had preferences for particular water temperatures; different types of ammonoids were found in high or low latitudes.
The pilot whale, harbor porpoise, and bottlenosed dolphin are all pelagic animals, which forage at a variety of depths.
