ABC News’ Diane Sawyer interviewed Nemcova in the months after the tragedy. Now, 20 years after one of the deadliest natural disasters in modern history, Petra sat down with Sawyer again to reflect on the horrors of that day, and the kindness of strangers that got her out alive.

Model Petra Nemcova opens up on 'GMA' about surviving the 2004 tsunami that killed 5,000 in Thailand. 'It's always difficult to go back in that moment.'

Nemcova speaks with ABC News’ Diane Sawyer about her life today after surviving a deadly tsunami in 2004. Did we write an entire post for folks who hate people? Why yes, we did. "It shows he's scared," ventured one scholar from the University of California, Los Angeles.