Catch them while you can - endangered bluefin tuna © Greenpeace/Gavin Newman

When we said a few weeks ago that customers of the Nobu chain of high-class sushi restaurants wouldn't be aware that the bluefin tuna being served there was endangered, we never thought they would respond to our complaint in quite such a literal manner. But now diners can clearly see which dishes include tuna from endangered stocks because it's written on the menu. As reported in the Sunday Telegraph and as a result of Greenpeace's investigative work and subsequent discussions with Nobu, customers at the up-market eatery will now be able to clearly identify the endangered species on the menu.

The Sunday Telegraph reports this morning that, thanks to Greenpeace investigative work*, we now know that London’s Nobu restaurants, among the capital’s favourite celebrity hangouts, are serving up endangered bluefin tuna as sushi.

In Chile, the world's scientists are already meeting in advance of the 60th International Whaling Commission (IWC), which will be held there in late June. At this time of year, the eyes of the world turn to the deadlocked struggle between pro-conservation and pro-whaling countries as they clash over the future of whaling at the IWC meetings. And recent events have not been going well for the whalers - in recent weeks we have seen just how desperate the pro-whaling nations are to play down not only the recent scandal of stolen whale meat in Japan, but also the saga of exporting whale meat from Iceland and Norway. Both stories highlight the extent to which the whalers are routinely flouting not only international opinion but also the global ban on commercial whaling and the trading of whale meat.

Follow the crew of the Arctic Sunrise on their campaign for Marine Reserves in our North Sea Tour blog

A weekend in Lerwick allowed us to bring the campaign to land, and bring people from land to the campaign. Leaving Shetland marks the end of the North Sea ship tour, but of course we'll be taking the campaign back to our various offices around the North Sea. Meanwhile, the Rainbow Warrior is in the Mediterranean continuing our European work on marine reserves.

Anemones on a sea mount - not known for their migratory habits

The weather forecast was ominous as we departed Aberdeen harbour, gales and high winds were ahead of us. But with the wind behind us, we've had a good night's sailing.

Follow the crew of the Arctic Sunrise on their campaign for Marine Reserves in our North Sea Tour blog

We have a hitch-hiker on board: a small bird, which - from my frantic bird handbook thumbing - appears to be a juvenile stonechat or whinchat. Anyway, everyone's happy to have the tiny stowaway with us for a while although it may leave us when we get closer to land. For now, however, it's proving to be camera-shy and getting fed on breadcrumbs.

Greenpeace's call for 40 per cent of our oceans to be set aside as reserves may sound radical, or even far-fetched. But it isn't. Others, such as the Royal Commission on Environmental Pollution have echoed what we're asking for. And sometimes, size DOES matter.

Large-scale Marine Reserves build in resilience to the ecosystems they encompass, allowing them to adapt to changes we might not even be able to predict (as well as those we are anticipating, like climate change). Most of what politicians have proposed quite simply doesn't go far enough: they are either too small, or too weak (the proposals, not the politicians).

Follow the crew of the Arctic Sunrise on their campaign for Marine Reserves in our North Sea Tour blog

We've had 'weather' out at sea, so again we've sought some shelter of the remote island of Fetlar. It's both reassuring to be near land when the wind's blowing, and frustrating when we can't set foot on it. I think many people on board would love to go for a nice long walk that didn't involve stairs or a handrail.

Follow the crew of the Arctic Sunrise on their campaign for Marine Reserves in our North Sea Tour blog

A couple of rock doves passed over the Arctic Sunrise this morning, heading for nearby cliffs on Fetlar. These birds are typically found on cliffs like those around Shetland, but are probably better known as the feral pigeons that have colonised the artificial cliffs we have built in our towns and cities.

Follow the crew of the Arctic Sunrise on their campaign for Marine Reserves in our North Sea Tour blog

A gannet in the waters of Shetland © Greenpeace/Christien Åslund

On Friday morning we left the shelter of Shetland, where we had spent a day at anchor in a secluded bay off the northerly island of Fetlar. I've never been there before, but it was a lovely spot to stop. We didn't go onto land, which was a shame because some of the crew had been practising their ceilidh dancing especially since we were headed towards Scotland's most northerly isles.