Watch the film about mapping the northern Bothnian Bay!

Final seminar presentations can be viewed at the “Final seminar” -page

Here are the first versions of some of the final results of the SEAmBOTH project. Accessible versions ( will replace these early version after the end of the project (April 2020). Species guides are published in accessible versions.


An introductory guidebook to the species of the northern Bothnian Bay. Most of the vascular aquatic plants and some algae, water mosses and invertebrate animals can be found in the guide book with some identification tips and beautiful pictures.

A guidebook to some macrophyte species, their ecology and function in the northern Bothnian Bay.

A macrophyte species guidebook (in Finnish) to aquatic vascular plants and some algae and water mosses of the SEAmBOTH area. Almost all species have a scanned herbarium sample along with some photos taken in the area.

Same guidebook in mobile version (in Finnish).


All SEAmBOTH blogs and some Metsähallitus merellä blogs which tell about the project have been collected to this pdf:

In our latest blogs we have published summaries and explanations to the results of activities undertaken during the project. For some interesting reads, check out the following blogs:


Project’s final report can be downloaded from here:

A collaboration between researchers from SYKE (Finnish Environment Institute), Stockholm University and Brockmann Geomatics AB resulted in new knowledge and insights about the use of earth observations for monitoring the Bothnian Bay waters. Now you can read the full report about their work as part of the SEAmBOTH project:

River estuaries are a threatened habitat with a great number of endangered aquatic plants, fish spawning grounds, bird migration and feeding grounds. Metsähallitus looked into river estuary underwater mapping and tried to get an answer to the question “Where does the river end and the sea begin” by assessing macrophytes in the estuary area. Here is a short report of field work and expert work on the topic:

Sjef Heijnen from HAS University of Applied Sciences, The Netherlands, did his 6 month internship in the SEAmBOTH project, and wrote his thesis about nature conservation management and occurrences of four threatened species in the northern Bothnian Bay:

Report on defining Natura 2000 habitats using point data and aerial images. Describing how the work was done, showing some results and sharing most important observations:


Maps will be available for viewing and downloading from national map portals in Finland and Sweden, and available to download from here. Updates to come!