[JohnR]

"It's all over the bay," he said by telephone from a boat in the bay where scientists were taking water samples. The cleanup was complicated because the oil had broken up into floating "tar balls," he said.

"It's hard to clean up because it's so heavy and so dispersed," Rasmussen said.

At Fairhaven, harbormaster Gary Golas said he could see a slick just 500 feet off shore.

"I'm standing here, just watching it," he said. "I had some recreation fishermen coming in and it's definitely on the side of their boats -- very heavy dark oil, gooey, and sticky."

http://www.boston.com/news/daily/28/cape_fuel.htm