The islands in the Aland archipelago are overgrown with vegetation and less people are at sea, except during the summer vacation. These conclude that grey seal and harbor seal are increasing in numbers, while ringed seal populations in the Gulf of Finland are decreasing and currently only represented by around 100 animals (HELCOM, 2017b). Assessments of ringed seal populations in the Bothnian Bay show a large increase, from estimates of 2000 seals in the mid 80s (Harkonen et al.,