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Enjoy the CIMASUB

Come and enjoy the underwater world. Find out where, when and what we offer.

Compete in the CIMASUB

Participate and take part in our competition with your photographs, short films or documentaries.

Organiser of the CIMASUB:

Latest news

The sea once again takes center stage in the ZERO ZABOR URETAN 2026 campaign, featuring CIMASUB and the best outdoor underwater film screenings

During the month of July, the Basque coast will once again become a major stage for raising environmental awareness with the seventh edition of ZERO ZABOR URETAN, an initiative led by the MATER Ecoactive Museum Ship, which...

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CIMASUB unveils the poster for its 50th edition, a tribute to those who made the history of underwater cinema possible

CIMASUB, the San Sebastián International Underwater Film Festival, has officially unveiled the poster for its 50th edition—a very special image with which the organization aims to commemorate half a century of history,...

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Luca Keller Joins the International Jury for CIMASUB's 50th Anniversary Edition

Luca Keller, a renowned German-Italian underwater filmmaker and content creator, joins the jury of the 2026 edition of Cimasub, the Donostia-San Sebastián International Underwater Film Festival, in a particularly special year...

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Opinions

Dawn Strohmeyer

Thank you so much for such a warm and generous welcome at CIMASUB 2025. It was a truly special festival filled with extraordinary films, kind and passionate people, and unforgettable moments. We arrived as strangers and left...

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Karlos Simón & Teresa Migoya

There is no other underwater film festival quite like CIMASUB. The organisation, details and gifts for the winners, the call for entries, screening days, awards ceremony, the awards themselves, the party on the last day of the...

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Alberto Santolaria

The San Sebastian underwater film festival has always been for our association a place where we can exhibit the work we have done throughout the year. Our main area of work is the Basque coast, so we consider CIMASUB as...

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