Ep 12. Lemuria

In The Deep season 3 episode 12 titled "Lemuria," the Nekton family makes their way to the lost city of Lemuria in search of a rare crystal that can power their submarine, the Arronax. Using high-tech equipment and their expertise in deep-sea exploration, the family begins their descent into the forgotten kingdom.

As they make their way through the city's underwater ruins, they discover that they are not alone. They are soon confronted by a group of hostile creatures known as the Guardians of Lemuria, who are determined to protect the city's secrets at all costs.

The Nektons must fight their way past the Guardians and navigate through treacherous traps and challenges to locate the crystal before it falls into the wrong hands. Along the way, they uncover long-lost artifacts and unravel the mysteries of the city's past.

But their journey is far from over. As they approach the crystal, they discover that it is guarded by a powerful force that threatens to destroy them all. The Nektons must use all of their skills and resources to overcome this final obstacle and claim the crystal before it's too late.

In the end, the Nekton family emerges from Lemuria victorious, but not without scars. They have learned valuable lessons about the importance of working together, staying focused, and never giving up in the face of adversity. And they know that their adventures are far from over, as there are countless more mysteries and treasures waiting to be discovered in the depths of the ocean.