Conservation groups and coastal states opposed to the new five-year federal offshore oil leasing plan are suing Interior Secretary Donald Hodel in an effort to force revisions that would exclude areas favored for fishing or scenic values.

Nine organizations filed suit against Hodel and the Interior Department yesterday, and several coastal states fearing environmental damage from oil drilling -- including California, Massachusetts, Washington, Oregon and Florida -- said they intend to file similar suits.

The law requires the suits to be filed in the U.S. Court of Appeals for the District of Columbia by Aug. 31, 60 days after the program took effect July 2.

"We are not seeking to stop the sales. We're seeking to have the court set aside the program and send it back to the {interior} secretary to be revised," said Sarah Chasis, a lawyer with the Natural Resources Defense Council.

The five-year plan, a controversial blueprint for federal offshore oil and gas leasing, schedules 38 sales from this month through June 1992.

The first sale occurred Aug. 12 in the western Gulf of Mexico and the last is set for June 1992 in the straits of Florida.

The most controversial sales would be in California, where nearly all members of Congress from coastal areas have been battling the Interior Department on the offshore leasing issue for several years, arguing that it pollutes the air and water and spoils the view.

Other areas where protection is sought are Georges Bank, home of the Massachusetts lobster and fishing industry off Cape Cod; the Florida Keys; Bristol Bay, Alaska, and tracts off the Washington and Oregon coasts.