Captain Paul Watson, founder of Sea Shepherd and co-founder of Greenpeace, has been arrested on July 21 under an international warrant issued by Japan. At the time of his arrest, he was in Greenland.

This year's 101-day hunt was dogged by Greenpeace and Sea Shepherd Conservation Society vessels. The Japanese whaling fleet caught 551 minke whales -- more than a third less than its goal of 850.

TOKYO, Japan (CNN)-- Anti-whaling groups have claimed partial victory in their attempts to disrupt Japan's annual whale hunt in Antarctic waters. Dogged by Greenpeace and Sea Shepherd Conservation ...

Formerly a leading member of Greenpeace, Watson left the organisation in 1977 due to a dispute over his tactics and set up ...

Environment group Greenpeace and New Zealand Deputy Prime ... Antarctic for its annual killings” Marine conservationists Sea Shepherd are claiming Japan's decision to abandon whaling around ...

Greenpeace ship sets sail on Thursday to study an ecosystem beneath the Atlantic Ocean thought to hold clues to the origins of life to press its case for a ban on deep-sea mining, as talks in ...

which split off from Greenpeace in the late 1970s, and his children also seem to support the cause. Holden is listed as an executive producer of the 2011 Sea Shepherd documentary Confessions of an Eco ...