While researching Australia’s deteriorating coral reefs, young marine biologist Abby receives word of her elderly mother Dora’s stroke. As she rushes to her seaside hometown to care for Dora, Abby recalls her childhood years spent living in concert with the ocean, and her mother’s efforts to protect the bay from greedy developers and invasive fishermen alike, often to the detriment of their own relationship. Among the coral gardens, Abby also befriends a rare fish, an enormous blue groper — affectionately named Blueback — a tether to her environmentalism, and the key to reminding Abby and Dora of their love for each other and the vulnerable waters they call home.
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