Please enable JavaScript.
Coggle requires JavaScript to display documents.
Oct -Physical - Coggle Diagram
Oct -Physical
Black Corals
discovered
on seabed of northern pacific ocean
on deep seamounts and ridges
in mineral rich
Prime Crust Zone
which stretches from
Mariana Trench to Hawaiian Islands
several countries
contracts to explore
for metals
Black Corals
slow-growing and long-lived
mining their habitat
potentially wipe them out
CHI,JAP,RUS,SK
hold exploration
named because
their black skeletons
can apper various other colours
more than 4,250 years old
International Seabed Authority
UN body in charge
regulating the ocean floors
Corals are immobile
so rely heavily on currents
to transport
tiny bits of organic material to feed on
low concentrations
nitrogen can be essential
nutrient for corals
providing energy for them to grow
overabundance of nitrogen
rich fertilizers into ocean
can trigger mats of algae to bloom
algae can outcompete
coral for resources
leaving reefs stressed
and bleached of color