The 48-year-old star is hoping to fight whale hunting in Japan, reported Femalefirst.
"Japan is now headed to the Southern Ocean, where its deadly industrial whaling fleet will hunt highly intelligent and socially complex whales in their internationally recognised sanctuary, in defiance of both the International Court of Justice and the Australian Federal Court.
"If the whales are not safe from illegal whaling in the remote wilderness of their Antarctic sanctuary, where are they safe?
"The urgent fight against the poaching of whales must continue in the courts, and I am proud to stand with Sea Shepherd on behalf of our clients, the whales.