Open-Top Tidal Pool Touch Tank?

[Teebo]

I recently visited the Niagara Falls Aquarium, and I stumbled upon this amazing "touch tank" however the signs said not to touch it haha. It is lit with three Kessel lamps, and the entire setup leaves me with many questions.

-Does the level of water rise and fall like a real tidal pool?
-How do they regulate salinity level with all this evaporation?
-There is no circulation pump, how does this work?

 

[reeferfoxx]

I recently visited the Niagara Falls Aquarium, and I stumbled upon this amazing "touch tank" however the signs said not to touch it haha. It is lit with three Kessel lamps, and the entire setup leaves me with many questions.

-Does the level of water rise and fall like a real tidal pool?
-How do they regulate salinity level with all this evaporation?
-There is no circulation pump, how does this work?

Auto top offs replace evaporated water. It does look like the water raises then lowers according to the water marks on the sides. Are you positive there wasn't water movement? Completely still?

 

[reeferfoxx]

Upon reading their website they have certain times of day were you get to feed the coral and invertebrates. Accompanied by host or person that will discuss this particular tide pool.

 

[Teebo]

There is flowing water from the back end toward the front but without powerheads just sump pump flow. I did not know you are allowed to feed them, that is awesome!