A U.S. activist featured in the Oscar-winning 2009 documentary "The Cove" about dolphin hunts in Taiji, Wakayama Prefecture, has been arrested in the nearby town of Nachikatsuura for not carrying his passport.

Ric O'Barry, 75, was arrested Monday night after admitting to police he did not have his passport on him.

The police said they were following up on a tip about a rental car being driven by a drunken driver. An officer stopped the car O'Barry was driving, but a breath test showed he was within the legal limit.

On Tuesday, meanwhile, fishermen in Taiji canceled the season's first drive hunt for dolphins, in which fishermen herd dolphins and other small cetaceans into a cove for capture or slaughter, because of bad weather.

They plan to begin the hunt as soon as the weather eases.

An international outcry has centered on claims that the practice is cruel.