Bulgaria and Ukraine issued the first joint philatelic edition between the two countries' postal administrations. In Sofia the stamp for validation was placed by the Executive Director of Bulgarian Posts Deyan Daneshki and the Ambassador of Ukraine Mykola Baltazhy. The theme of the edition is related to the preservation of the unique inhabitants of the Black Sea.
The postal administrations have chosen two beautiful symbols for the joint philatelic edition - the Black Sea Dolphin and one of the most beautiful clams known as the "Angel Wing". The edition consists of two postage stamps in a block and a special stamp. The circulation amounts to 14 000 pieces, and the artist of the Bulgarian project is Kapka Kaneva.