TEHRAN, Apr. 26 (Mehr News Agency) -- Children participating in the "Blue Heart" festival currently underway at the Institute for the Intellectual Development of Children and Young Adults (IIDCYA) are preparing kites for National Persian Gulf Day on April 30.

According to the IIDCYA Public Relations Office, children and young adults will fly kites on which mottos defending the everlasting name of the Persian Gulf are written.

The participants are also busy making small boats. They will launch them in a pond designed in the shape of the Persian Gulf at the Tehran branch of the institute.

The kite-flying ceremony will be held at 4 p.m. on the roof of the institute, which is located on Hejab St., off of Keshavarz Blvd.

The "Blue Heart" festival began in Tehran on April 24 and will continue until May 1. This year's festival focuses on a collection of art, literary, and research works of IIDCYA'S child members.

The festival, which is held annually, has one main theme each year. This year it concentrates on the issue of the Persian Gulf through an exhibition of paintings, calligraphy works, literary writings, and research works.