The next, the first in 2018, the seminar of the SATBAŁTYK consortium took place on Wednesday, March 21 at 12:00 in the large seminary hall IO PAN. At the meeting, current consortium matters were discussed and a paper dr hab. Sławomir Woźniak (IO PAN): "Practical method of estimating the spectral values of the light scattering coefficient in sea water based on the remote reflectance of the sea under conditions prevailing in the Baltic Sea region: formulation, preliminary validation and an example of application".