Janis Krums was riding on one of the first ferries to arrive at the scene of Thursday’s plane crash in New York’s Hudson River. He snapped a photo with his iPhone and tweeted it on his Twitter stream. Here’s a direct link to the photo.

His photo was one of the first photos of the crash, and it illustrates the emergence and ubiquity of the real-time web. For more info, check out Robert Scoble’s round-up of real-time coverage of the crash.