Every year on 8 June, the United Nations celebrate World Oceans Day to raise awareness of the important role it plays in our lives. This year’s World Oceans Day theme – life and livelihoods – focuses on the importance of the ocean for all life on Earth and sheds light on the changing oceans. As the largest ecosystem on the planet, the world’s ocean is a pillar of climate regulation and a powerful source of solutions to the changing climate. IAEA scientists use nuclear and nuclear derived techniques to understand the processes and mechanisms that control the oceans and propose strategies to protect people and the marine environment from the impacts of climate change, pollution, habitat destruction and biodiversity loss.?IAEA assists countries in achieving the Sustainable Development Goal 14: “Life Below Water” (Conserve and sustainably use the oceans, seas and marine resources), by 2030.