I was pleasantly surprised by the large collection of penguins at the New England Aquarium. I spent quite a bit of time watching the African, rockhoppers, and little blue penguins in the various pools along with a number of people in the pools cleaning the displays. I would guess this is a constant battle. The giant ocean tank also had a nice display of sharks, sea turtles, barracudas, and moray eels along with divers who were again cleaning the display. I would highly recommending a day at this aquarium!