The series picks up where the movie left off and, like the film, stars animal activist Ric O'Barry. Two episodes of the series -- being executive-produced by O'Barry's son, Lincoln -- have been completed, although a premiere date has yet to be announced, Ric O'Barry said.
Animal Planet says the series may premiere in the fall, after "The Cove" premieres on the channel this summer.
"The Cove" tells the story of an annual rite in Taiji, Japan, where fisherman sell dolphins into captivity or kill them for meat. As depicted in the film, the practice is cruel and the dolphin meat contains risky levels of mercury.
O'Barry is an activist who once worked as a trainer on the popular 1960s television show "Flipper." He has dedicated his life to campaigning for animal rights, a quest that eventually took him to Taiji.
The show will address questions that fans of the film may have wondered about -- such as whether the slaughter continues and whether the Japanese still unknowingly eat mercury-laden dolphin meat.
"What has happened now is that they're not killing dolphins in the cove; they've moved offshore," O'Barry said. "They've created an artificial cove out of nets, and they drive the dolphins in there and kill them so we can't photograph it. But we have some drones and small planes and things to prove it."
Marjorie Kaplan, general manager and president of Animal Planet, said the film's message was perfect for the channel. "Ric and Lincoln O'Barry are fascinating men with an important mission and remarkable stories to share," she said. "We're delighted to be working with them on their next project."
If a news release issued by the government in Taiji is any indication, the Japanese remain unimpressed by the film's success. "There are different food traditions within Japan and around the world," read the statement. "It is important to respect and understand regional food cultures, which are based on traditions with long histories."
On the Academy Awards telecast, O'Barry held up a sign that urged interested viewers to text-message a number for more information about how to support the cause. More than 50,000 texts have come in, O'Barry said.
The activist also encountered a number of celebrities at the Oscars who said they would visit Taiji in September, when the annual dolphin slaughter begins. Daryl Hannah, Sting and Ben Stiller have already pledged their support, he said.
Until then, O'Barry, now 70, is heartened that the film will be released at a limited number of Japanese movie theaters in June.
"They can't deny this film anymore," he said. "The last couple of months have meant validation, in a word. It's been a breakthrough for me."