This is from the Newport Aquarium website.
"Groups of 15 or more can get an inside look at the Aquarium facility and learn what it takes to maintain a one million-gallon environment. "
Pricing
Up to 15 Guests $195*
Each Additional Guest $12.99*
Note: Children under 16 must be accompanied by an adult
* Price does not include Aquarium admission tickets.
Groups should book at least two weeks in advance of their planned visit date
The pricing for the tickets are in addition to the Aquarium entrance ticket.