Netflix’s newest original show, Mako Mermaids, is now available for streaming. The show is a spin-off of popular Australian teen show H20 – Just Add Water.

Here’s the official description:

This sequel to “H2O: Just Add Water” follows a boy named Zac who turns into a merman after falling into a magical Pool. Zac’s new powers could spell trouble for the three young mermaids who guard Mako Island.

Thirteen episodes are available, and another thirteen will be available in September. Titles of the available episodes are: Outcasts, Getting Legs, Meeting Rita, Lyla Alone, Blizzard, Dolphin Tale, Zac’s Pool Party, Zac’s Return To Mako, The Siren, Zac Returns to Mako, I Don’t Believe in Mermaids, Close Call and Betrayal.

Titles for the forthcoming episodes are: Battlelines, Sirena’s Secret, Truce, Moon Ring 2, The Trident Job, Where’s the On Button?, Nowhere to Hide, Aquata Returns, Evie Times Two, Zac’s Choice and Trust.

So far this year, Netflix has had an incredible run with its original shows. Three of them have fourteen Emmy nominations among them, and another appears to be even more popular than those. In September, Netflix members in the U.S. will get to experience the Ricky Gervais show Derek as a streaming exclusive.