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Threats to the Marine Environment

Effects of soil runoff

Table Coral covered by sediment, Faga'alu, American Samoa

Faga'alu, American Samoa

Silt & fishing line, Makai Pier, Waimanalo, Oahu

 

Mostly dead after silt

Makai Pier, Waimanalo, Oahu

 

Completely dead

Healthy corals, Honokeana Bay, Maui

 

Honokeana Bay, Maui

Honokeana Bay, Maui

 

Silt causing tissue loss on Crater Coral

Waimea Bay, Oahu, 15 feet

 

Bangladesh

Bangladesh

Cloth & silt on coral, Haleiwa, Oahu

 

Corals are also sensitive to choking by mud and sand washed into the ocean from mismanaged land-clearing, agricultural, and construction sites.  Dredging and filling has the same effect.