A boat sinks into the ocean in the aftermath of...

A boat sinks into the ocean in the aftermath of the surge caused by a tsunami on the harbor in Santa Cruz, Calif., Friday, March 11, 2011. Credit: AP

A tsunami swept at least five people watching the waves out to sea Friday and ripped docks out of harbors in California, spreading the destruction of a devastating Japanese earthquake to the shores of the United States.

Four people were rescued from the water in Oregon, but one man who was taking photos in Northern California was still missing Friday afternoon. Coast Guard helicopters searched for him near the mouth of the Klamath River in Del Norte County, Calif., after his two friends made it back to shore.

About 25 miles north, four people were swept off a beach north of Brookings, Ore. Two got out of the water on their own and the others were rescued by law enforcement and fire officials.

A man was found dead aboard a commercial vessel in Brookings, but sheriff's officials said it appeared to be from natural causes.

The large waves shook loose boats in that weren't moved in time and tore apart wooden docks in at least two California harbors.

"This is just devastating. I never thought I'd see this again," said Ted Scott, a retired mill worker who lived in Crescent City when a 1964 tsunami killed 17 people on the West Coast, including 11 in his town. "I watched the docks bust apart. It buckled like a graham cracker."

The waves didn't make it over a 20-foot break wall protecting the rest of the city, and no home damage was immediately reported.

Damage estimates in Crescent City were in the millions, and more boats and docks were hit in Santa Cruz on California's central coast. Surges are expected throughout the afternoon.

President Barack Obama said the Federal Emergency Management Agency is ready to come to the aid of any U.S. states or territories who need help.

Earlier, the tsunami hit Hawaii before dawn, rushing up on roadways and into hotel lobbies on the Big Island and low-lying areas in Maui were flooded as 7-foot waves crashed ashore.

Scientists warned that the first tsunami waves are not always the strongest, and officials said people in Hawaii and along the West Coast should remain vigilant. Tsunami warnings continued in California and Oregon, but were downgraded to an advisory in Hawaii, and Gov. Neil Abercrombie said the islands were "fortunate almost beyond words."

"All of us had that feeling that Hawaii was just the most blessed place on the face of the Earth today," he said.

Get the latest news and more great videos at NewsdayTV Credit: Newsday

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Get the latest news and more great videos at NewsdayTV Credit: Newsday

Dig-out day on LI ... More snow this weekend? ... Islander Insider: Babylon housing plan ... Out East: Einstein in Southold ... Get the latest news and more great videos at NewsdayTV

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