Rainbow Warrior

Deforestation continues in Indonesia, as this image taken on 16 October of an area cleared for an Asia Pulp & Paper (APP) plantation shows (c) Sutton-Hibbert/Greenpeace

Being a part of a Greenpeace ship tour is never boring. Generally, you expect the unexpected, and then you're surprised. But even by ship tour standards, the Rainbow Warrior's recent 'tour' of Indonesia was an interesting one.

It started with high hopes that our peaceful campaigning ship would be able to support the Indonesian president's stated aims of ending deforestation in Indonesia. It ended with the Rainbow Warrior being denied vital supplies and being ordered - and escorted - out of Indonesian waters and well into international waters by two navy vessels, in breach of international maritime law.

An ex-bluefin tuna found during the Rainbow Warrior's previous visit to the Mediterranean in 2007 © Greenpeace/Care

Imagine you are an Atlantic bluefin tuna. You've been out at sea most of the year in cooler waters, feeding away and generally getting on with being a big ol' fish at the top of your food chain. You have not a care in the world, save the occasional orca or shark scare.

Then spring is sprung, and the urge takes you. Forces you don't really understand compel you to head back to warmer waters, and a certain key place, sacred to you bluefin. The bluefin equivalent of a romantic dinner and some subdued lighting is a sheltered warm sea, and conditions have to be perfect, or it ain't happening. But even that's not enough. Because of the, er, messy, way most fish reproduce, they congregate together, and only release sperm and eggs when the time and the temperature is right: 23 degrees Celsius. It's the perfect temperature for a bluefin love-in.

The Rainbow Warrior anchored near Kingsnorth power station during last year's UK visit

Shiver me timbers and other nautical cliches. Greenpeace's flagship Rainbow Warrior is currently on her way to the UK. She and her crew are en route to Copenhagen for the UN climate conference next month, but she'll be harbouring in London and Edinburgh over the next couple of weeks and her gangplanks will be lowered for anyone who wants to visit.

John Hocevar, aboard the Rainbow Warrior in Malta, describes how sailors from one of the Mediterranean's largest tuna fishing companies violently attacked a female crew member trying to inspect and document their trawler's cargo. Watch the video evidence for yourself.