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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




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.