Rick Ross, the new president of Discovery Communications’ flagship channel, is ready to get rid of megalodons and mermaids.

The longtime Disney executive has made it clear that the line between fact and fiction should not be crossed on the Discovery channel. The network has been successful financially, but have come under heavy criticism by the scientific community for stretching the boundaries of reality.

Discovery’s annual “Shark Week” has featured fake ‘documentaries’ about the megalodon shark the past two years. In 2013, the channel showed Megalodon: The Monster Shark Lives, a fictional documentary that poses the question of the extinct shark’s continued existence. The special convinced 70 percent of viewers that the shark still lived in our oceans, according to business insider.

The channel also recently aired a show, produced by Animal Planet, about mermaids.

“Brands are all about trust,” Ross said in a statement. “You can expand the universe of what people think you are, but there’s only so much elasticity. On Discovery, that’s why I talk about authenticity. Authenticity is job number one, two, and three.”

He went on to say that regardless of their entertainment value, fake documentaries do not have a place on the Discovery channel.

“It’s not whether I’m a fan of it. I don’t think it’s right for Discovery Channel.”

One of the first people Ross hired to bring his vision of the new channel to life was John Hoffman. Hoffman has won multiple Emmy Awards and spent many years in HBO’s well-respected documentary unit. Ross has named him Discovery’s executive vice president of documentaries and specials.

Ross also mentioned that he wants to broaden Discovery’s audience. Currently, roughly 60 percent of the audience is male. Ross is hoping to appeal to families with two new scripted programs this year, one of which will likely be a historical miniseries. Ross aims to create projects around moments in history that are echoed in the modern world.

“Wouldn’t it be amazing if we could tell stories that are actually indicative of behaviors and situations and see if we can alter them in a postive way?” said Ross. “That’s my kind of interactive: make people care.”