Cratena peregrina (Cratena peregrina)

This stamp presents the Traveling Cratene, a flamboyantly colored nudibranch (sea slug) which testifies to the little-known beauty and fragility of microscopic underwater life. The illustration highlights its purple and orange cerates (dorsal appendages), symbolizing the biological diversity of Tunisian reefs. Through this small species, the show carries a message of protection of the marine environment, reminding us that each organism plays a crucial role in the balance of nature.