Grey seal

Grey seal census data Annual numbers of molting grey seals and molting site locations in Finnish sea areas.

Harmaahyljelaskenta-data Karvanvaihtoaikaiset harmaahyljemäärät ja karvavaihtoalueiden sijainti Suomen merialueilla vuosittain.

Data and Resources

Additional Info

Field Value
Author Mervi Kunnasranta
Maintainer Mervi Kunnasranta
Last Updated January 19, 2022, 10:24 (EET)
Created December 8, 2021, 12:24 (EET)
Citation recommendation Luonnonvarakeskus (Luke)
Coverage basis Grey seals of Finland
Data embargo period (years)
Geographical coverage Finnish sea area
Language of data Finnish
Location of data and backups Luke
Methods Luke carries out annual aerial census during the peak of molting time in late May/early June in Finland during the international Baltic grey seal census period (see https://helcom.fi/media/publications/Guidelines-for-monitoring-Seal-abundance-and-distribution-in-the-HELCOM-area.pdf). Grey seals are photographed when they are visible and hauling out on rocks. Individual seal numbers are later counted from images. Gained result is the regional minimum estimate of grey seals, because part of the population is always submerged and not visible on land or surface.
Person(s) responsible for handling data request about dataset kirjaamo@luke.fi
Taxonomic coverage Baltic grey seal
Temporal coverage Since 2000, but most accurate data from 2005