Nyhet —
Autonomous Gliders in the Quest for Ocean Biodiversity - the eDepthNA project
Environmental DNA (eDNA) refers to genetic material shed by organisms into their surroundings, such as water, through skin, faeces, mucus, or blood. It enables scientists to detect species and assess biodiversity without the need to capture organisms directly.
Typically, in marine pelagic systems eDNA is collected by filtering water samples. In most cases, this requires researchers to travel to sampling sites and filter water using manual or electric pumps. As a result, in addition to time consuming filtering, offshore biodiversity assessments depend heavily on vessel availability and are often expensive.
To address these limitations, TotalEnergies OneTech through their project OWESOME (Offshore Wind Environmental Survey Optimization to Monitor impacts on Ecosystems) funded the integration of an eDNA sampler manufactured by Dartmouth Ocean Technologies into a Slocum G3 glider, fabricated by Teledyne, to enable of collecting eDNA remotely across offshore environments and at varying depths. The glider was deployed in 2025 in the North Sea and a second deployment will take place in 2027. Following the OWESOME project development, Equinor and TotalEnergies One Tech joined forces to fund the eDepthNA project, which aims to further develop and validate an uncrewed autonomous vehicle.
The eDepthNA project is led by Akvaplan-niva in collaboration with the Norwegian Institute for Water Research (NIVA). Its objective is to integrate an automated eDNA sampling system into an underwater glider, enabling remote collection of eDNA throughout the water column. The sampler is being developed by Dartmouth Ocean Technologies, and the chosen platform is a Teledyne Slocum G3 glider.
In spring 2026, scientists conducted experimental work at Akvaplan-niva research station outside Tromsø, testing the sampler with known eDNA samples to optimize performance and ensure scientific validation. A fully validated system is expected to be ready by the end of 2026.