The Municipality of Alonnisos is a founding member of the Blue Municipalities Network and has implemented the following practices for the conservation of the marine ecosystem:
- 1 Marine Litter Collection Station at the Fishing shelter of Katapola that has contributed to the collection of 990 recyclable pieces (2023)
- 1 widespread initiative including underwater and coastal clean-ups
- 2 research programs that included sampling and analysis of seabed sediments and microplastics
- 4 educational programs in primary and secondary education classes
- 1 workshop for the local community