SHARK - National marine environmental monitoring of vegetation-covered bottoms since 1992.

Information about the programme and methods is available in Swedish on the Agency for Marine and Water Management's website.
- Sub-programme for vegetation-covered bottoms: https://www.havochvatten.se/surveillance-and-follow-up/miljoovervakning/organization-and-programomraden/miljoovervakningens-programomrade-coastal-and-sea/subprogram-vegetationskladda-bottnar.html
- East coast: https://www.havochvatten.se/government-by-laws/government-by-government/other-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government-by-government.html
- West coast: https://www.havochvatten.se/vagledning-foreskrifter-och-lagar/vagledning/ovriga-vagledningar/undersokningstyp-for-miljoovervakning/undersokningstyp/vegetationskladda-bottnar-vastkust.html

Data is stored in Svenskt HavsARKiv (SHARK) by the Swedish Meteorological and Hydrological Institute (SMHI).
The monitoring is carried out by Stockholm University, the University of Gothenburg and LinnéUniversity.