Newsrooms around the world have been carrying images of the earthquake in Japan from the moments after it struck.
While the disaster itself lasted only a few minutes, the recovery operation will continue for months.
Dan Simmons looks at how, following a natural disaster, the internet is becoming an essential tool for survivors and rescuers alike.
Links to the technology featured in the video are below:
NTT Docomo disaster message board
Mixi (Japanese site)
Google Person Finder