Some marine organisms on the seafloor thrive in corrosive seawater

The sea floor is a habitat especially rich in species that produce calcium carbonate shells or skeletons – so-called marine calcifiers. Sea urchins, sea stars, coralline algae, crustaceans, and numerous mollusks, such as mussels, find their home here. Marine calcifiers play an important role in global biogeochemical cycles and serve important ecosystem functions. They are a food supply for other organisms and store carbon. At present, the ocean takes up a quarter of the carbon dioxide-released to the atmosphere by human industrial activities – with long-lasting consequences for the chemical composition of seawater and marine habitats.

from Oceanography News -- ScienceDaily http://ift.tt/2aDXY2v
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