We have more on the massive destruction on the jersey shore from the ground level. So much of that iconic beach town of seaside heights is underwater. Full of debris there. Part of the boardwalk... See More
We have more on the massive destruction on the jersey shore from the ground level. So much of that iconic beach town of seaside heights is underwater. Full of debris there. Part of the boardwalk knocked out. "Nightline" anchor terry moran on the scene from his vantage point. Terry? Reporter: What you have been seeing, the fires you're looking at, that's the concern they have here. This is an unbelievable scene. Block after block, mile after mile of this kind of ruin. And in the wreckage behind me, you can hear the gas lines hissing. There are people here still. And they've been told by the fire department that one spark and this town could blow. This morning, new jersey's seaside heights, the city synonymous with summer fun, is now a city completely submerged. From the air, destruction as far as the eye can see. Fires smoldering. Some still burning even after the worst winds had passed. Entire lots of homes gone. The entrance to the city, underwater. Boats that withstood the powerful winds, stacked like cars in a junk yard. This is incredible. On the ground, the damage is devastating. How are you doing now? You got food? You got what you need? Yeah. Reporter: Floodwaters stranding homeowners who didn't take the warning serisly. Why would you stay? I didn't think it was going to be this severe. Reporter: What was once an east coast summer staple, recently made even more popular by mtv's reality show "jersey shore," will never be the same. The boardwalk demolished. Its remains tossed like kindling. When you look at this, what do you think? Total devastation everywhere. Reporter: The fun town amusement peer on the shoreline. A merry-go-round, built nearly 100 years ago, destroyed. Ferris wheels toppled. This mammoth rollercoaster immersed in ocean waves. The jersey shore of my youth, where we used to go all the time, to the boardwalk at seaside heights, it is gone. The pier with the rides, where i took my kids this august, are in the atlantic ocean. Reporter: A summer way of But the spirit remains. We spent the night down here in our cars. And a resident came out of the dark and asked us if we needed anything. That's the spirit of the jersey shore. George? Wow. That is something. Those pictures, so sad, terry.
This transcript has been automatically generated and may not be 100% accurate.