Dolphin Reef (film) A Disneynature feature. Echo, a young Pacific bottlenose dolphin, seems far more interested in exploring his spectacular coral reef home and its intriguing inhabitants than learning to survive in it. But lessons from his mother, Kumu, and a few close encounters with some of the ocean’s greatest predators may encourage Echo to master his vital role in the marine community after all. Directed by Keith Scholey. Digitally released Apr. 3, 2020, on Disney+. Originally released Mar. 28, 2018, in France as Blue. Narrated by Natalie Portman. 77 min.