Sea Life Porto
Sea Life Porto has a tunnel under the water where the visitors can see more than 3,000 species of animals, including sharks and manta rays.
Sea Life Porto is the second-largest aquarium in Portugal after the Lisbon Oceanarium. It's home to more than 3,000 species from penguins to sharks, via mantra rays and giant turtles.
The aquarium is next to the City Park, making it the perfect combination of activities if you're travelling with children.
The Submarine World
The Porto Sea Life has a variety of attractions sure to delight the whole family, but above all, it's the giant aquatic tunnel, filled with more than 500,000 litres of water that visitors love, where you can see the animals of the aquarium up close.
Another of the main attractions is the opportunity to visit the penguin enclosure - known as penguin harbour.
Perfect for kids
If you're heading to Porto with your kids in tow, it's a must-see, with its range of exhibitions making its something a little bit different to the other sights in the city.
Monday to Friday: 10 am to 7 pm.
Saturday and Sunday: 10 am to 8 pm.
Adults: € 15.50 (US$ 16.60)
Students: € 10.50 (US$ 11.30)
Children from 3 to 12: € 10.50 (US$ 11.30)
Children under 3: Free
Bus: 203, 205, 500, 502, 500.