The head of Greenpeace has asked for a meeting with the Russian President, Vladimir Putin, following the arrest of the entire crew of the ship used in a protest against Arctic oil drilling.
Greenpeace's executive director Kumi Naidoo says he is willing to travel to Moscow at any moment to secure the release of the 30 people on board the Arctic Sunrise icebreaker.
He says he would be a guarantor for the good conduct of the Greenpeace activists if they are released on bail.
They have been charged with piracy and face up to 15 years in jail.
In a letter to Mr Putin he said Greenpeace is willing to face the consequences, as long as they are within a nation's criminal code as any reasonable person understands that code to be.
A spokesperson for Mr Putin says the Kremlin has not yet received the letter and cannot comment.