Wild blue territory on Instagram: "Four powerful ocean waves converging into a single point is a rare and fascinating natural phenomenon caused by the way waves interact with the seafloor beneath them. When incoming waves travel over underwater ridges, slopes, or channels, their speed and direction change through a process called wave refraction. In very specific seabed geometries, multiple wave trains from different directions bend inward and focus their energy at one precise location. Instead

Convergence: A Must-Read YA Dystopian Fantasy