Nails in wood

I found a board washed up on a beach, 12" by 70". A perfect board for a specific project and has at least 32 nails embedded within. Although some nails will need to be removed, the spacing of the nails is quite large but still in the wood and give a lot of charector to this project. I do plan my design to try and avoid nails but:

So, what happens when a V-bit hits a nail? Shrapnel and explosions or simply a small glitch in the carving process or?

Probably a broken bit, lost steps, jacked up project.