This is the 10th year the Marine and Freshwater Research Institute participates in the International Summer Survey in Nordic Seas (IESSNS) along with vessels from Norway, Faroe Islands, Greenland, and Denmark.

Aim of the survey is to investigate all levels of the pelagic ecosystem from primary production to whales. The survey design includes transects and surface trawl stations at predetermined locations. On the transects, we use hydro acoustics to measure abundance of blue whiting and herring, and whale sightings are recorded. We also continuously record temperature and primary production in the surface mixed layer, and luminescence at the surface. At stations, we collect zooplankton samples, preform surface trawling to measure mackerel density, measure temperature and salinity from surface to 500 m, and collect water samples to measure chlorophyll, nutrients, salinity, and environmental DNA.

We left Reykjavík in the evening of July 3, heading northwest. Ahead are 30 days at sea where we will sample 65 surface trawl stations and sail 6000 nautical miles.

You can follow our progress and that of the vessels from Norway, Faroe Islands, and Greenland at: https://skip.hafro.is/