Update 02 18 2014
Special Buildings
Oceanic Platform
Jacques-Yves Cousteau Bridge
Great Protective Barrier
Timed Quest
Creatures of the Seven Seas
Marine Ecology Center
Seven Seas Museum

With Update/02.18.2014 there were 3 Special Buildings integrated.Also there got a Timed Quest integrated into the game.

Special Buildings

As Special Buildings there are three new fixed buildings that are located off the coast to the west of the Marina expansion territory.

They have the following costs:

Oceanic Platform Construction Oceanic Platform

120,000 Coin sm
or 4 Megabucks sm

Jacques-Yves Cousteau Bridge Construction Jacques-Yves Cousteau Bridge

80,000 Coin sm
or 4 Megabucks sm

Great Protective Barrier Construction Great Protective Barrier

180,000 Coin sm
or 5 Megabucks sm

Timed Quest

(see Creatures of the Seven Seas)

Quest Creatures of the Seven Seas
Aside the new buildings a new Timed Quest called Creatures of the Seven Seas was also implemented. Like the most Timed Quests this one has 9 stages to complete and there have to be built Oceanic Platform, Jacques-Yves Cousteau Bridge, Great Protective Barrier.

As bonuses for completing special stages you get in the mids Marine Ecology Center and at the end Seven Seas Museum.

Marine Ecology Center Marine Ecology Center Bonus Building
Seven Seas Museum Seven Seas Museum Bonus Building