Gijón/Xixón Aquarium offers a tour of 60 freshwater and salt water tanks that allow you to learn about the flora and fauna of the seas in detail.
A journey through the seas of the world, starting with a Cantabrian river and freshwater species such as sturgeon, otters, salmon and trout, to reach warm waters filled with coral and wonderful fish full of color, as well as cold climes with penguins included and, of course, sharks, turtles, etc.