High Quality Content by WIKIPEDIA articles! Dr. Moritaka Hayashi is an international lawyer, scholar and author, who is widely considered a leading expert on the impact of human activity on the world`s oceans. Over a period of nearly 40 years, he has published extensively on issues involving the law of the sea, including overfishing, maritime shipping and maritime security. In 2008, he served on an international commission that generated controversy by calling for the immediate suspension of bluefin tuna fishing in the Eastern Atlantic Ocean and Mediterranean Sea. He has also served as an official at the United Nations and as a diplomat for the Permanent Mission of Japan to the United Nations.