Underwater Text-Messager Makes SCUBA Diving Safer {Switched.com}

Jan 7th 2008 6:19AM "Watch out for that shark!", everybody grabs for their cameras and the wretched thing is half a kilometer away.

I can't see it really. When do you want to communicate over distances? What would you want to communicate? "I'm out of air and I'm wasting the last few moments of my life texting you rather than swimming upwards like mad."