Yes, 'The Reef Stalked' is based on a true story. It often draws from real - life events that occurred in relation to the reef environment, perhaps events involving the unique ecosystem, the creatures within it, and the various threats they face.
Hard to say. Sometimes stories like this are a blend of real experiences and creative imagination. You might need to research the background of the book or its author to find out for sure.
Not necessarily. Many films labeled as such are only loosely based on real events. 'The Reef' might incorporate some factual aspects but might also have a significant amount of imagination and fictional elements mixed in.
Not necessarily. 'The Reef' could be inspired by true events but might have been heavily fictionalized to make it more engaging or to fit a certain narrative structure.