National Marine Park of Alonissos Northern Sporades (core Zone A, incl. Piperi island)

Greece's first and the Mediterranean's largest marine park, protecting the Mediterranean monk seal (Monachus monachus). The strictly protected core zone (Zone A, centred on Piperi) bars general access and fishing; spearfishing is not permitted in the protected core. Commercial fishing in the wider park is restricted to coastal vessels with nets/longlines/traps.