On 13, 14 and 15 November, the Teatro Principal hosted three underwater film sessions that brought together nearly 1,400 people. A total of 24 short films and documentaries were screened, receiving rave reviews and palpable enthusiasm from the audience. The selected works took viewers on a journey from the landscapes of the Cantabrian Sea to remote destinations such as the Azores, the Maldives, Komodo and the Philippines, exploring a wide range of topics such as diving and freediving, the behaviour of large whales and whale sharks, the presence of the invasive algae Rugulopteryx okamurae, the denunciation of the uncontrolled trade in shark fins, and coexistence with iconic species such as orcas, humpback whales and grey sharks. Also noteworthy was the scientific revelation about the worrying risk of extinction threatening 44% of the planet's corals, according to the IUCN, as well as the screening of a hypnotic slideshow featuring the hundred best underwater photographs of the edition. Throughout the festival, 23 awards were given to the most outstanding works, selected from more than 500 photographs and more than 100 audiovisual works received, of which 19 short films and 5 documentaries were finally screened at the Teatro Principal.

The city of Donostia was also imbued with art and underwater life thanks to the three photographic exhibitions installed throughout November at the Garbera Shopping Centre, the San Sebastián Aquarium and the Kirol Etxea at the Anoeta Stadium, which offered thousands of visitors the opportunity to admire the beauty and diversity of the ocean through images of great artistic and scientific quality.

The educational dimension of CIMASUB once again shone brightly with the Txikiziklo Submarino, held over five days at the Aquarium. Nearly 500 children from schools in Donostia took part in activities designed to encourage curiosity, respect and care for the marine environment. The students came from the Hegoa, Herri Ametsa Ikastola, The English School, Intxaurrondo Ikastola, Amara Berri, Arantzazuko Ama, Maria Reina Eskola, CEIP Aiete and Zuhaizti Eskola schools, where they enjoyed immersive experiences specifically designed to awaken their love for the ocean.

The festival came to Donostia after closing the CIMASUB TOUR 24/25 with spectacular figures. Over the last twelve months, more than 26,000 people took part in the various activities of the tour, which included almost 70 underwater film screenings held in 33 locations, as well as 21 photographic exhibitions that ran for a total of 552 days and were visited by more than 15,000 people. The educational programme also had a notable impact thanks to the 28 editions of Txikiziklo, with more than 3,600 primary school children from 52 schools in the Basque Country taking part, and Adinziklo Submarino, which brought the marine world to almost 1,000 elderly people in 20 nursing homes and day centres.

Following this brilliant conclusion, the CIMASUB TOUR 25/26 is now beginning, in which the festival aims to surpass previous figures and continue to bring ocean culture, underwater art and environmental awareness to new locations throughout the peninsula.

CIMASUB would like to express its special thanks to all the public institutions, sponsors, companies and collaborating entities that make this project possible. Thanks to their continued support, the festival has become an unmissable event both for underwater imaging professionals and for the general public who, year after year, fill the cinemas and faithfully accompany this celebration of the ocean, cinema and marine conservation.