Sea Colonies is an advance in Civilization: Call to Power.
Summary[]
Sea Colony, the sixth Sea Advance, opens the deep ocean to colonization. Protected by the Stealth, Sub and supported by the Sea Engineer, these new Sea Colonies create a Civilization beneath the waves. Finally, Sea Colony Advances allow for the construction of undersea tunnels and undersed mines.
Great Library entry[]
While the lure of space drew some, the ocean proved more economic incentives for colonization and attracted what was left of the middle class. With 70% of the planet covered in water, the oceans provided room aplenty for oceanic expansion. In these new ocean cities, the middle class thrived, and new philosophies of equality began to grow.