Susulan "H2O" ini mengisahkan Zac, remaja lelaki yang bertukar menjadi duyung lelaki dan mengancam kewujudan tiga duyung muda yang mengawal Pulau Mako.

The coastal town of Bristol Cove is known for its legend of once being home to mermaids. When the arrival of a mysterious girl proves this folklore all too true, the battle between man and sea takes a very vicious turn as these predatory beings return to reclaim their right to the ocean.

Sirens is a thriller set in Eilat. It revolves around Shelley Toledano, 32, a policewoman with the Illegal Aliens unit, which is mostly devoted to documenting and following refugees from Africa who infiltrate the city through its border with Egypt. Shelley is rugged and outspoken, and used to the difficult sights that come with the job. But one day, when the body of the person closest to her is found, her life is turned upside down.

Sirens of the Mediterranean sea look for the lost last Triton in the city of Naples.