Let's explore the serene coastal ecosystems of coral reefs. These ecospheres are really iconic and we always hear about the beauty of reefs with all their lively communities and colour. But what we don't usually hear about, is how did these reefs actually get there? How did they start out? I'll also explore some different reef formations that you can only imagine from a birds-eye-view. And... what do reefs have to do with ancient civilisations and pirates?