About Us
We produce documentary films and content about the natural world, specialising in underwater and marine storytelling.
What We Do
Grumpy Turtle Films produces documentary content about the natural world- from short-form digital series to standalone documentary films. We can develop and produce original projects or bring your existing concept to life.
Our expertise includes underwater filming in tropical and temperate environments, natural history sequences, and conservation storytelling. With over a decade of experience and broadcast credits across National Geographic, PBS, and ABC, we work on professional cinema camera systems, including RED, Sony, and Canon, both topside and underwater, using Nauticam housings.
Whether it's a 30-second social clip or a 20-minute documentary, we bring technical excellence and authentic storytelling to every project.
Meet the Team
Harriet Spark
Founder
Harriet is a documentary director and producer specialising in conservation storytelling. With broadcast credits including National Geographic (‘Secrets of the Octopus’), PBS Nature, and ABC, Harriet brings professional filmmaking expertise to GTF productions.
As an Emerging League Member of the International League of Conservation Photographers (iLCP), Harriet is committed to using documentary film to inspire conservation action.
She founded Grumpy Turtle Films to create impactful stories about the natural world.
Learn more about Harriet: harrietspark.com
Cinematographer
Woody Spark
Woody is an award-winning underwater cinematographer with over a decade of experience in natural history and documentary production.
A multiple ACS Gold Award winner, Woody has worked on productions for National Geographic (Secrets of the Octopus), Netflix (All the Sharks), PBS, and Stan. With a background in electrical engineering and experience in rebreather diving, Woody brings unique technical expertise to underwater filming, shooting on RED, Sony, and Canon cinema systems, both topside and underwater.
Learn more about Woody: woodyspark.com