Dr Constantinos Yiallourides gave an in-person guest lecture titled “The Protection & Preservation of Fragile Ecosystems in Areas under Overlapping Maritime Claims” at the Tohoku University, Graduate School of Law in Sendai, Japan. Dr Yiallourides’ lecture examined existing rules and principles of international environmental law and the law of the sea governing the protection of rare and fragile marine ecosystems and how these are applied to the conduct of States operating in areas under dispute.