The wanted Sea Shepherd leader, Paul Watson, is marshalling resources for the biggest campaign yet against Japanese Antarctic whaling.
Watson said that despite being without a passport and moving in secret, he intended to lead the campaign by 120 people on four ships this summer.
"We aim to stop them completely this time," he told Fairfax. "They will be so financially in the hole that they can't climb out."
Official pressure on Watson is escalating with a second Red Notice, or international wanted persons alert, issued by Interpol at the request of Japan for alleged hooliganism, vandalism and damage.
The Japanese prosecution relates to the 2010 boarding of a whaling ship by then Sea Shepherd activist Pete Bethune.
A tip-off from inside Germany's Justice Ministry enabled Watson to evade a Japanese extradition request and skip bail July 22, he said. "They would have seized me the next morning."
He was being detained in Germany on €250,000 ($A293,000) bail following the surprise re-appearance of 10-year-old navigation charges from Costa Rica.
Since then Watson, 61, has refused to disclose his location. Asked in a telephone interview whether he was on land or at sea, he replied: "I don't have a passport, so it's pretty hard to move around."
Nevertheless, he said Sea Shepherd's funds for its ninth Antarctic campaign had been boosted by "my problems". The US Animal Planet television production firm has signed on for another series of Whale Wars, and crews enlisted to go south.
The Australian-based vessels Steve Irwin, Bob Barker and Brigitte Bardot will be joined by a yet to be seen fast ship, Sam Simon, which Watson said was in an undisclosed location. It was donated to the group by a founding producer of The Simpsons.
With Sea Shepherd operations likely again to be heavily reliant on Australian port access, Environment Minister Tony Burke reiterated government condemnation of unlawful behaviour on the high seas.
“Safety at sea is Australia's foremost priority," Mr Burke said. "The government has repeatedly called upon all the masters of all vessels planning to voyage to the Southern Ocean to exercise restraint and ensure that safety is their number one priority.”
Watson said the timing of this year's campaign would depend again on the departure of the Japanese fleet. "We've got all the ships and the funds. My obstacle is getting there, as I can't enter any country."
In an extensive defence posted on the Sea Shepherd website, Mr Watson denied any wrongdoing, but said he had no time to deal with charges arrayed against him in Costa Rica and Japan.
"I believe that saving the lives of a thousand whales must take priority over playing courtroom games with Japan and Costa Rica," he said. "You don't win a battle by playing by the rules of the opposition."
The whaling fleet usually departs from Japan in mid-November to take minke and fin whales under the International Whaling Commission's disputed scientific research clause.
Further government funding to prop up the fleet is reported to be forthcoming, with the whaling's inclusion under a Profitable Fisheries Support Project scheme, according to the Dolphin and Whale Action Network in Tokyo.