This dataset contains polyline data of bridges and other constructions downloaded from OpenStreetMap. Attributes specification and units osm_id: OpenStreetMap ID name: Name of the construction, if available man_made: description of the construction other tags: tags related to the construction

The dataset contains the location of shellfish mariculture sites from EMODnet (https://www.emodnet-humanactivities.eu/search-results.php?dataname=Shellfish+Production). Data from HOLAS 2 was used to complement the dataset (https://metadata.helcom.fi/geonetwork/srv/eng/catalog.search#/metadata/21efdecc-2fd7-4bfb-9832-68c995291bf7). Each point has the following attributes (where available): status (active, inactive, licensed) country owner name area name farm type (Mussels, Oysters, Mussels-Oysters, Clams, Specialised (other), Mixed (other)) production method (Beds, Long lines, Rafts, Saltwater closed (recirculation), Saltwater ponds, Saltwater tanks/raceways,Trestles or trays, Other) production stage (Grow out for human consumption, Hatchery, Nursery, Broodstock, Reproduction, Harvest, Other) purpose (Commercial, Research, Education, Display, Other) products detailed (English translation of the information provided on species grown or authorised in the source) point information (Polygon centroid, Original) depending on how the information is provided in the source (polygons or points) site_id distance to coast (meters) position from coastline (At sea, within the coastline) notes: indication of HOLAS 2 data

The dataset contains sand and gravel extraction activity during 2016–2021. The dataset is based on data submitted by HELCOM Contracting Parties in response to a data call. The dataset contains active sand and gravel extraction sites as reported by Estonia, Finland and Germany. Attribute specification and units with predefined values specified from the data call Name: Name of the extraction site Area: Area where the activity is taking place in km2 amount2016 - 2021: Amount of extraction reported per year in tonnes or/and m3 Depth: Metres per event Category: Recurrence of the extraction (one-time, recurring event) Start_day: Start day of the dredging activity Start_mont: Start month of the dredging activity Start_year: Start year of the dredging activity End_day: End day of the dredging activity End_month: End month of the dredging activity End_year: End year of the dredging activity Sediment: Type of sediment extracted (mud, sand, hard substrate, mixed sand, other) Method: Method used in the extraction (digging/dredging device (open, enclosed), suction device, other) Notes: notes regarding the reported data

The dataset contains data from the HELCOM Pollution Load Compilation (PLC) data collection. The dataset covers the period from 2016-2020. Attribute specification and units code: site code name: Name of the fish farming company Country: Country id (DK = Denmark, FI = Finland, SE = Sweden) basin: Baltic Sea subbasin TP_16 - TP_20: Annual phosphorus loading in tonnes (T P / year) TN_16 - TN_20: Annual nitrogen loading in tonnes (T N / year) X: X coordinate point Y: Y coordinate point

The dataset represents the radioactive discharges from nuclear facilities in the Baltic Sea area. Data includes isotopes CS137, CO60 and SR90 Aquatic discharges in 2016-2021 with decay corrections. Attribute specification and units SITECODE: Code of the site SITENAME: Name of the site COUNTRY: country in which the site is located CO_2016 - 2020: isotope CO60 discharge during the reporting period SR_2016 - 2020: isotope SR90 discharge during the reporting period CS_2016 - 2020: isotope CS137 discharge during the reporting period CO_avg: average of isotope CO60 for the period CS_avg: average of isotope CS137 for the period SR_avg: average of isotope SR90 for the period

The dataset contains the extent of the land claim (permanent or temporary establishments of the sea) and the type of construction reported by the Contracting Parties for the period 2016-2021. The data was made available by HELCOM Contracting Parties in response to a data call. The data was reported by Denmark, Estonia, Finland, Poland, Russia, and Sweden. The activity was declared as not relevant in Germany and Latvia. Attribute specification and units (for points and polygons): Name: Name of the site Descrip: Brief description of the type of land claim Year: Year of construction, especially if built between 2016-2021 Area: Area in km2 Notes: Notes regarding the data Attribute specification and units (for lines): Country: Contracting Party that reported the information Type: Brief description of the type of land claim Estimated: Estimated year Area: Area in km2 Name: Name of the site descripto: Description of the site in national language Notes: Notes regarding the data

The dataset contains point data describing the location of oil platforms in the Baltic Sea as reported by the Contracting Parties for the period 2016-2021. The data was made available by HELCOM Contracting Parties in response to a data call. The data was reported by Poland (HOLAS 2 data) and Russia. The activity was declared as not relevant by Estonia, Denmark and Latvia. Attribute specification and units: COUNTRY: The country where the structure is located LATITUDE: Latitude of the point location LONGITUDE: Longitude of the point location Name: Name of the structure Notes: Notes regarding the data

The dataset contains the location of water course modifications as reported by the Contracting Parties for the period 2016-2021. The data was made available by HELCOM Contracting Parties in response to a data call. The data was reported by Denmark, Estonia, Finland, and Sweden. The use of HOLAS 2 data was requested by Estonia and Sweden. The activity was declared as not relevant in Germany and Latvia. Attribute specification and units (points and polygons): Year: Year of construction, especially if built between 2016-2021 Type: Structure type as listed on the data call (canalisation, culverting/trenching, causeway, damn/weir, other) Notes: Notes regarding the data Status: The status of the structure, if available Dimension: The dimension of the outlet, if available Original ID: Original identification used by the Contracting Party Attribute specification and units (lines): ID NAMESPACE STATUS KATEGORI TYPE JOURNAL_NR NOTE REGISTERTI REGISTER_1 VIRKNINGFR VIRKNINGTI EJER FAERDIGMEL REGISTRERI VIRKNINGSA

Created from EEA data, this dataset contains point data with the location of bathing sites downloaded from EEA (https://www.eea.europa.eu/data-and-maps/data/bathing-water-directive-status-of-bathing-water-13). No data from Russia. Attributes specification and units countryCod: International Country Code (ISO 3166-1-Alpha-2 code elements) bathingWat: Bathing water name reported by a Member State specialise: Specialised zone type lon: Longitude lat: Latitude bwProfileU: Hyperlink to documents or web pages with bathing water profile, if available

The dataset contains coastal defence and flood protection data that was made available by HELCOM Contracting Parties in response to a data call. Data were collected by the HELCOM Secretariat in 2022. Data were reported by Denmark, Finland, Germany, Poland and Sweden. For Latvia, the dataset was classified as no data available. Estonia and Sweden requested the use of HOLAS 2 data. HOLAS 2 data was also used to complement data from Poland and Denmark. Attribute specification and units with predefined values specified from the data call Name: name of the structure for polygon format Zone: Location of the site for line format Type: Type of structure (sea walls, breakwaters, groynes, flood protection, gabions, stone protection, dike, other) Year: Year of construction, especially if built between 2016-2021 Status: Status of the structure harmonized with the values from a predefined list (operational, under construction, application submitted, planned, approved, other), and following a precautionary approach that attributed the value operational for values that were out of the predefined list Dimension: Spatial dimensions of the structure in m2 Notes: notes regarding the reported data and HOLAS 2 data indication. Status_original: original status declared by the Contracting Parties