Matthias Haeckel is a marine biogeochemist at the GEOMAR Helmholtz Centre for Ocean Research Kiel. He holds a PhD in Natural Sciences from Kiel University. In his research, he combines sea-going fieldwork with numerical modelling and high-pressure experiments to entangle and quantify biogeochemical processes and how they are altered by anthropogenic uses of the ocean, such as methane hydrate exploitation, oil & gas production, sub-seabed CO₂ storage, deep-sea mining. Since 2015, he has been coordinating the large collaborative European project MiningImpact on the environmental risks and impacts of deep-seabed mining. For OceanICU, he is leading WP5 on how industrial processes affect the marine carbon cycle.