Mussel harvests in Whidbey Island's Penn Cove are temporarily suspended while state ecologists investigate a fire that caused a boat to sink.

The 128-foot Deep Sea crab boat was anchored when it caught fire Saturday. It sank Sunday, leaving a sheen on the water, the Whibey News-Times reports.

The U.S. Coast Guard placed oil booms around the area to prevent fuel from spreading.

Teams from Global Diving and Salvage, based out of Seattle, were scheduled to inspect the wreckage Sunday night to plug fuel tanks and locate any leaks.

State ecologists will investigate the environmental impact Monday.

It is unknown why the boat was anchored in Penn Cove.

KING 5's Lindsay Chamberlain compiled this report.

Editor's note: A previous version of this story incorrectly cited the company hired to remove the wreckage.

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