Ninjas in the mist

I woke up this morning to find that the world had been swallowed up by a dense fog. cycling to work was interesting, I couldn't see further than about 50 metres which was a tad nerve wracking. However once I got to Victoria park I had to stop and take some photos of the people emerging and disappearing in the fog.

Thanks to mono for the title of this one. Ninjas in the mist indeed.