I've never heard of him, is there something I should check him out in?

Depending on what you mean, yes the sea was always there. Alexandria was founded as a port city. It was hit by a large tsunami a few hundred years after the reign of Cleopatra and subsequent earthquakes have changed the shoreline, so if the tunnels are underwater today they probably weren't 2000 years ago.

It's dead at Fox but hopefully someone else will pick it up. Fox doesn't own it, which is why they decided not to make it.