Greenpeace executive director Russel Norman has escaped conviction over a protest against an oil industry survey ship.
He was charged with obstructing the ship off the coast of New Zealand, forcing it to stop its seismic blasting work.
Norman and another climate activist, Sara Howell, have been discharged without conviction at the Napier District Court.
Greenpeace said the pair had acted to stop the world's largest oil and gas exploration ship searching for fossil fuels off the Wairarapa coast.
They faced charges laid by the Ministry of Business, Innovation, & Employment after the April 2017 action to confront the Amazon Warrior.