The highlight is a walk through the tunnel that is nice enough but pretty short. How I wish it was longer than it is. Unfortunately, there are no live corals or seaweed, but all the tanks are very clean and the collection of fishes are good. You may enjoy having a fish foot spa where your feet will be nibbled by "doctor fish" which is proved to be therapeutic. You have to pay an extra amout of P120 for it. You may also try an experience in a Glass Bottom Boat Ride where you can view the fishes, stingrays and other creatures below it, but it is not that big. The boat guide will made it exciting though. There is also a souvenir shop where you can buy something as a remembrance.
MOP is accessible to Intramuros, Rizal Park, floating restaurant and casino and even at the SM Mall of Asia (huge mall in Asia).