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The International Underwater Film Cycle (CIMASUB) celebrates its 3rd edition in Tenerife with an ambitious program that will travel across the island from April 14 to 17, bringing the public the very best of international underwater cinema. Under the slogan “The truth before your eyes,” the festival invites citizens to discover the beauty and fragility of the oceans through free screenings open to all audiences.
All CIMASUB activities in Tenerife will be free of charge until full capacity is reached. There is no need to collect tickets or invitations in advance: entry will be granted on a first-come, first-served basis, so early arrival is recommended.
The program includes four underwater film sessions in different locations across the island, all at 7:00 PM:
April 14 – La Laguna – Teatro Leal
April 15 – San Miguel de Abona – Casino
April 16 – Arona – Auditorio Infanta Leonor
April 17 – Santa Úrsula – La Casona
In addition, CIMASUB reinforces its educational commitment with four morning sessions aimed at more than 500 students from 10 schools, taking place on the same dates and in the same municipalities. These screenings are designed to encourage respect and care for the marine environment among younger audiences, combining cinema, learning, and awareness.
The film sessions will offer a carefully curated selection of short films and documentaries awarded at the latest edition of the festival, creating an exciting and revealing journey through the world’s oceans:
The Tiny Wonders of Anilao. Philippines 2025, by Valera Sakhnenko (Canada). A short film that reveals the microscopic universe of the ocean, showcasing tiny yet beautiful creatures and highlighting the need to protect these fragile ecosystems.
The Invasive Algae – Rugulopteryx okamurae, by Julio Junquera Aparicio (Spain). An informative documentary about the spread of this invasive species, which is altering marine ecosystems and affecting biodiversity and fisheries.
The Mother of Diamonds. Kimberlite, by Alexander Benedik (Austria). A visual and symbolic piece that combines freediving and geology to explore the origin of diamonds and the Earth’s creative power.
The First to Fall, by Olivier Bourgeois and Emma Pettersson. A short film that portrays the work of the scientific community in response to the alarming situation of corals, many of which are at risk of extinction.
Underwater photography slideshow (CIMASUB selection). A projection of standout images from the competition, offering a visual journey through the richness and diversity of the underwater world.
The Beauty We Can Still Save, by José Ramón Castelló Fortet (Spain). A hopeful journey that invites us to reconnect with the ocean and realize that there is still time to protect it.
Magic Moments, by Alfred Schaschl (Austria). A short film capturing unique moments of the underwater world, combining visual spectacle with a reflection on its fragility.
Shark Preyed, by Marco and Andrea Spinelli (Italy). A documentary that examines the global shark trade and denounces the threats endangering their survival, calling for action and conservation.
This edition’s slogan, “The truth before your eyes,” defines the spirit of CIMASUB: to show the underwater world as it truly is, without artifice, highlighting the work of photographers and filmmakers who document both its extraordinary beauty and the threats it faces.
Through cinema, photography, and education, the festival aims to move, inform, and raise awareness about issues such as pollution, overfishing, and the degradation of marine ecosystems. The goal is clear: to inspire a real commitment to protecting the oceans.
School sessions, one of the most prominent initiatives in the program, will allow children aged 10 to 12 to engage with this reality through adapted content and educational activities, fostering responsible habits and a deep connection with the natural environment.
A collective project for society as a whole
CIMASUB in Tenerife is organized together with the Cabildo de Tenerife and the Government of the Canary Islands, with the collaboration of Voluntariado Ambiental, Fedecas, and the municipalities of La Laguna, San Miguel de Abona, Arona, and Santa Úrsula. This year, the Government of the Canary Islands also joins as a sponsor, reinforcing its commitment to artisanal and sustainable fishing in the archipelago.
An open invitation to all citizens
For four days, Tenerife will become a window to the ocean—a space where emotion, science, and art come together to reveal the reality hidden beneath the water.
CIMASUB invites all residents of Tenerife to come and enjoy this unique experience, and to be moved and inspired by stories that call for action.
Because only by looking directly, with the truth before our eyes, can we understand the importance of protecting the oceans that sustain life on our planet.
The International Underwater Film Cycle (CIMASUB), the longest-running underwater film festival in the world, is a unique window into the depths of the sea that combines sport, technology, art, and education. Since its founding in 1975 by Subacuáticas Real Sociedad, it has worked to foster love and respect for the ocean, showcasing its biodiversity and raising awareness about its fragile condition.
After 49 editions, CIMASUB has established itself as an international benchmark, bringing together thousands of people each year around underwater cinema and photography. In the past year alone, more than 26,000 people have participated in its activities, with events held in nearly 30 locations and a strong educational impact reaching thousands of students.
The festival continues to grow with a clear objective: to educate, raise awareness, and mobilize society in defense of marine ecosystems.
The International Underwater Film Cycle (CIMASUB) celebrates its 3rd edition in Tenerife with an ambitious program that will travel across the island from April 14 to 17, bringing the public the very best of international underwater cinema. Under the slogan “The truth before your eyes,” the festival invites citizens to discover the beauty and fragility of the oceans through free screenings open to all audiences.
All CIMASUB activities in Tenerife will be free of charge until full capacity is reached. There is no need to collect tickets or invitations in advance: entry will be granted on a first-come, first-served basis, so early arrival is recommended.
The program includes four underwater film sessions in different locations across the island, all at 7:00 PM:
April 14 – La Laguna – Teatro Leal
April 15 – San Miguel de Abona – Casino
April 16 – Arona – Auditorio Infanta Leonor
April 17 – Santa Úrsula – La Casona
In addition, CIMASUB reinforces its educational commitment with four morning sessions aimed at more than 500 students from 10 schools, taking place on the same dates and in the same municipalities. These screenings are designed to encourage respect and care for the marine environment among younger audiences, combining cinema, learning, and awareness.
The film sessions will offer a carefully curated selection of short films and documentaries awarded at the latest edition of the festival, creating an exciting and revealing journey through the world’s oceans:
The Tiny Wonders of Anilao. Philippines 2025, by Valera Sakhnenko (Canada). A short film that reveals the microscopic universe of the ocean, showcasing tiny yet beautiful creatures and highlighting the need to protect these fragile ecosystems.
The Invasive Algae – Rugulopteryx okamurae, by Julio Junquera Aparicio (Spain). An informative documentary about the spread of this invasive species, which is altering marine ecosystems and affecting biodiversity and fisheries.
The Mother of Diamonds. Kimberlite, by Alexander Benedik (Austria). A visual and symbolic piece that combines freediving and geology to explore the origin of diamonds and the Earth’s creative power.
The First to Fall, by Olivier Bourgeois and Emma Pettersson. A short film that portrays the work of the scientific community in response to the alarming situation of corals, many of which are at risk of extinction.
Underwater photography slideshow (CIMASUB selection). A projection of standout images from the competition, offering a visual journey through the richness and diversity of the underwater world.
The Beauty We Can Still Save, by José Ramón Castelló Fortet (Spain). A hopeful journey that invites us to reconnect with the ocean and realize that there is still time to protect it.
Magic Moments, by Alfred Schaschl (Austria). A short film capturing unique moments of the underwater world, combining visual spectacle with a reflection on its fragility.
Shark Preyed, by Marco and Andrea Spinelli (Italy). A documentary that examines the global shark trade and denounces the threats endangering their survival, calling for action and conservation.
This edition’s slogan, “The truth before your eyes,” defines the spirit of CIMASUB: to show the underwater world as it truly is, without artifice, highlighting the work of photographers and filmmakers who document both its extraordinary beauty and the threats it faces.
Through cinema, photography, and education, the festival aims to move, inform, and raise awareness about issues such as pollution, overfishing, and the degradation of marine ecosystems. The goal is clear: to inspire a real commitment to protecting the oceans.
School sessions, one of the most prominent initiatives in the program, will allow children aged 10 to 12 to engage with this reality through adapted content and educational activities, fostering responsible habits and a deep connection with the natural environment.
A collective project for society as a whole
CIMASUB in Tenerife is organized together with the Cabildo de Tenerife and the Government of the Canary Islands, with the collaboration of Voluntariado Ambiental, Fedecas, and the municipalities of La Laguna, San Miguel de Abona, Arona, and Santa Úrsula. This year, the Government of the Canary Islands also joins as a sponsor, reinforcing its commitment to artisanal and sustainable fishing in the archipelago.
An open invitation to all citizens
For four days, Tenerife will become a window to the ocean—a space where emotion, science, and art come together to reveal the reality hidden beneath the water.
CIMASUB invites all residents of Tenerife to come and enjoy this unique experience, and to be moved and inspired by stories that call for action.
Because only by looking directly, with the truth before our eyes, can we understand the importance of protecting the oceans that sustain life on our planet.
The International Underwater Film Cycle (CIMASUB), the longest-running underwater film festival in the world, is a unique window into the depths of the sea that combines sport, technology, art, and education. Since its founding in 1975 by Subacuáticas Real Sociedad, it has worked to foster love and respect for the ocean, showcasing its biodiversity and raising awareness about its fragile condition.
After 49 editions, CIMASUB has established itself as an international benchmark, bringing together thousands of people each year around underwater cinema and photography. In the past year alone, more than 26,000 people have participated in its activities, with events held in nearly 30 locations and a strong educational impact reaching thousands of students.
The festival continues to grow with a clear objective: to educate, raise awareness, and mobilize society in defense of marine ecosystems.
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