Ask a high schooler what it takes to protect a coastline, and most of us picture the same thing: a marine biologist in waders, knee-deep in the surf. On March 17, I learned the picture is much bigger than that.

Ask a high schooler what it takes to protect a coastline, and most of us picture the same thing: a marine biologist in waders, knee-deep in the surf. On March 17, I learned the picture is much bigger than that.