Overfishing, pollution and waste disposal, agricultural runoff, invasive alien species, sewage, pesticides, industrial chemicals, other types of waste. This neverending list of human interference is threatening the delicate balance of our oceans [1,4]. Global climate change is raising the sea level, increasing the water temperature, and acidifying seawater [5,7,9]. We’re losing the rich biodiversity of marine ecosystems at an unprecedented rate. We need to act now to save our oceans.