Greenpeace activists released from custody following an amnesty over their protest in the Russian Arctic say they have no regrets.

The 30 crew members were mounting an environmental protest outside an Arctic oil rig when Russian authorities detained them last September.

They crew was originally charged with piracy, a charge which was later downgraded to hooliganism. All 30 were released following the passage of an amnesty law, which observers have interpreted as an attempt to temper foreign criticism of Russia's human rights record.

Crew members were expected in various European cities later Friday, and many have already released statements through their local branch of Greenpeace.

Anthony Perret, the first to be released, told the BBC the ordeal was "definitely worth it."