The annual catch, in which people from the southwestern town corral hundreds of dolphins into a secluded bay and butcher them, was thrust into the global spotlight in 2010 when it became the subject of the Oscar-winning documentary "The Cove".
"The dolphin hunting season started today and will last until the end of February," said an official of the Taiji fisheries association, adding the season for hunting pilot whales, which also begins today, will last until April.
But bad weather on Monday meant there would be no hunting on the day, he said.
Environmental campaigners are already in situ to watch the hunt, the official said.
Last season, activists from international environmental group Sea Shepherd, who call themselves "Cove Guardians", streamed live footage of the dolphin capture.
AFP