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Mystery Sheen, Southeast Oahu, Hawaii

China Walls, Oahu | 2019-Aug-07

Initial Notification: On August 7, 2019, the U.S. Coast Guard Sector Honolulu contacted the NOAA SSC to request support related to a mystery sheen reported off the China Walls and Spitting Cave area near Hawaii Kai on the Island of Oahu, Hawaii. The sheen was reported to USCG as approximately 1 mile long and 20 meters wide, appearing orange/brown in color and looking like emulsified oil. USCG requested an assessment of whether the sheen, if confirmed to be oil, could potentially impact nearby shorelines. A verbal trajectory was provided. After investigation, USCG determined the sheen was of biological origin.

Incident Details
Primary threat:Other
Latitude (approximate): 21° 15.47′ North
Longitude (approximate): 157° 42.45′ West