Noob question, what are these?

It may help to provide a picture of your equipment pad and any above ground plumbing. That many intakes is somewhat unconventional.
 
They appear to be anti-entrapment intakes, so you will have two intakes for each source. Do you have a water features that pull water from the pool?

No water features or that I know of? There is a 'spa' area in the pool that you can turn jets on that come out of 4 eyeballs, then a seperate remote can make heaps of water bubbles/turbulance that come out from at least 50 little holes made between the tiles in that same spa area
 
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