NEW BATAAN, Philippines — The number of people missing after a typhoon devastated the Philippines jumped to nearly 900 after families and fishing companies reported losing contact with more than 300 fishermen at sea, officials said.

The fishermen from southern General Santos city and nearby Sarangani province left a few days before Typhoon Bopha hit the main southern island of Mindanao on Tuesday, Civil Defense chief Benito Ramos said. The death toll has already surpassed 600, mostly from flash floods that wiped away precarious communities in the southern region unaccustomed to typhoons.

Ramos said the fishermen were headed to the Spratly Islands in the South China Sea and to the Pacific Ocean. Coast guard, navy and fishing vessels are searching for them, and some may have sought shelter on the many small islands in the area.

"Maybe they are still alive," Ramos said Sunday.

Bopha was dissipating finally in the South China Sea after briefly veering back toward the country's northwest on Saturday, prompting worries of more devastation.

Rescuers were searching for bodies or signs of life under tons of fallen trees and boulders in the worst-hit town of New Bataan, where rocks, mud and other rubble destroyed landmarks, making it doubly difficult to search places where houses once stood.

Hundreds of refugees, rescuers and aid workers took a break Sunday to watch the Manny Pacquiao-Juan Manuel Marquez fight on a big TV screen, only to be dismayed by their hero's sixth-round knockout.

Elementary school teacher Constancio Olivar said people fell silent when Pacquiao, a congressman who comes from the southern Philippines where the storm hit, fell heavily to the canvas and remained motionless for some time.

"It was like a double blow for me – this disaster and this defeat," said Olivar, whose house was destroyed in the storm. "We were all crestfallen. Everyone fell silent, stunned. It was like we saw a tsunami."

Nearly 400,000 people, mostly from Compostela Valley and nearby Davao Oriental province, have lost their homes and are crowded inside evacuation centers or staying with relatives.

President Benigno Aquino III has declared a national calamity, which allows for price controls on basic commodities in typhoon-affected areas and the quick release of emergency funds.

Officials said Sunday that 316 people were killed in Compostela Valley, including 165 in New Bataan, and 301 in Davao Oriental. More than 45 people were killed elsewhere. Nearly 900 are missing, including the fishermen and 440 from New Bataan alone.

Davao Oriental authorities imposed a curfew there and ordered police to guard stores and shops to prevent looting.

The typhoon destroyed about 18 percent of the banana plantations in Mindanao, causing losses estimated at 12 billion pesos ($300 million), according to Stephen Antig, executive director of the Pilipino Banana Growers and Exporters Association.

The Philippines is the world's third-largest banana producer and exporter, supplying international brands such as Dole, Chiquita and Del Monte.

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Associated Press writers Oliver Teves and Hrvoje Hranjski in Manila contributed to this report.

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  • Residents, impacted by Tuesday's storm, line up for relief supplies at an evacuation center Thursday, Dec. 6, 2012, in New Bataan township, Compostela Valley in the southern Philippines. (AP Photo/Bullit Marquez)

  • A boy waits in a temporary shelter after Typhoon Bopha made landfall in Compostela Valley in southeastern Philippines Tuesday Dec. 4, 2012. (AP Photo/Karlos Manlupig)

  • Philippine President Benigno Aquino III, second from left in foreground, help to distribute relief goods to victims of Typhoon Bopha during his visit to New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Philippine President Benigno Aquino III, center, talks to local government officials prior to distributing relief goods to victims of Typhoon Bopha at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • A boy pulls his slippers after getting stuck in the mud as he heads home with relief goods at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Typhoon victims receive relief goods following the visit of Philippine President Benigno Aquino III at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Two friends are reunited by chance while waiting to receive relief goods following the visit of Philippine President Benigno Aquino III at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Typhoon victims receive relief goods following the visit of Philippine President Benigno Aquino III at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Typhoon victims receive relief goods following the visit of Philippine President Benigno Aquino III at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Typhoon victims wait for the visit of Philippine President Benigno Aquino III to distribute relief goods at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Typhoon victims receive relief goods following the visit of Philippine President Benigno Aquino III at New Bataan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • Commuters pass by a banana plantation that was destroyed at the height of Tuesday's typhoon named "Bopha" at Nabunturan township, Compostela Valley in southern Philippines Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • An almost completely destroyed banana plantation is seen Friday Dec. 7, 2012 following Tuesday's typhoon named "Bopha" which hit Nabunturan township, Compostela Valley in southern Philippines. (AP Photo/Bullit Marquez)

  • Rescuers continue to retrieve bodies of flash flood victims three days after powerful typhoo Bopha remote New Bataan township, Compostela Valley in soutehrn Philippines leaving more than 200 people dead and 373 more missing Friday Dec. 7, 2012. (AP Photo/Bullit Marquez)

  • A resident searches for missing relatives amongst the debris, swept away by flash floods at the height Typhoon Bopha in New Bataan, Compostela Valley province on December 7, 2012. President Benigno Aquino vowed action on the Philippines' typhoon disasters December 7 as bruised and grieving survivors tried to recover from the latest that left nearly 500 people dead. (TED ALJIBE/AFP/Getty Images)

  • A flash flood survivor makes use of a classroom as his temporary shelter after Typhoon Bopha destroyed most of the houses in the area, Thursday, Dec. 6, 2012, in New Bataan township, Compostela Valley in the southern Philippines. (AP Photo/Bullit Marquez)

  • This Earth Observatory image made on Dec. 3, 2012, provided by NASA shows Typhoon Bopha moving toward the Philippines. Typhoon Bopha slammed into the Davao region of the Philippines early Tuesday, Dec. 4, killing at least seven people and forcing more than 50,000 to flee from inundated villages. (AP Photo/NASA, Jesse Allen)

  • Workers clear a road with a fallen tree after Typhoon Bophal hit the city of Tagum, Davao del Norter province, on the southern island of Mindanao on December 4, 2012. (AFP/AFP/Getty Images)