TechOceanS will actively engage with scientists, manufacturers, marine stakeholders and resource managers to target “Essential Ocean Variables” that currently can only be measured by observations from a ship. The new technologies developed in the project will enable the capture of vital, previously inaccessible data on the ocean’s biogeochemistry, biology and ecosystems. TechOceanS – Technologies for Ocean Sensing – will pioneer five new sensors, two imaging systems, a novel sampler and an Artificial Intelligence-driven image processing methodology, all capable of robust operations at depths beyond 2,000 metres.