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COSEA
Exploring our Seas & Coasts for Science
Download the COSEA App and start observing!
App Link to Google Play for Android
App Link to Apple App Store for IOS

With COSEA you can observe your marine environment, document coastal habitats or species, do activities, and report on pollution, infrastructure, and the blue economy. COSEA is a collaborative, participatory, and community-driven project. With your contributions on the map and your activity in the app, you help scientists better understand the impacts and drivers of marine factors to protect and foster a healthy relationship between humans and our seas.

Do you love the seas?

Create your COSEA user profile now and share your favourite locations around the world!

Already COSEA?

Login here to add your Spots to the map and share your moments with the community!

Participate

Take part in surveys and activities by logging in with your COSEA App user account.

Decorative Image of waves on beach

Latest Spots from the COSEA App

Tsuyoshi Maeda
12/03/2026
Submitted image of user contribution in app

Tsuyoshi Maeda
29/03/2026
Submitted image of user contribution in app

Tsuyoshi Maeda
18/07/2026
Submitted image of user contribution in app

Tsuyoshi Maeda
24/11/2025
Submitted image of user contribution in app

Tsuyoshi Maeda
06/09/2025
Submitted image of user contribution in app

Tsuyoshi Maeda
07/09/2026
Submitted image of user contribution in app

Tsuyoshi Maeda
07/09/2026
Submitted image of user contribution in app

Tsuyoshi Maeda
18/10/2024
Submitted image of user contribution in app

Tsuyoshi Maeda
30/08/2025
Submitted image of user contribution in app

Tsuyoshi Maeda
28/12/2025
Submitted image of user contribution in app