Underwater cities
Coral reefs are among the most beautiful and at the same time most threatened ecosystems on our planet. Did you know that coral is neither a plant nor a stone, but a living organism capable of building a vast underwater “city” full of life? Why are coral reefs so important, what threatens them most today, and is there still hope of saving them? Come and discover the fascinating world of corals, learn about the latest scientific discoveries and restoration projects, and find out how each of us can contribute to the protection of the oceans.
Coral Reefs — thematic photograph from the original offer





