At the Antarctic Convergence, there's upwelling of nutrient-rich cold water which provides plenty of food for krill and forms the basis of the whole Southern Ocean food chain
There is no system to ensure all countries abide by the rules in the Antarctic Treaty and Protocol, and disputes between countries can be slow to resolve
The main UN agency that governs the world's environment, including in Antarctica through the Commission for the Conservation of Antarctic Marine Living Resources (CCAMLR)
Affects people and places around the world, e.g. informing efforts to combat climate change, regulating economic growth, enabling scientific exploration, and allowing safe tourism