For those interested in marine life, a visit to the Grand Aquarium in Saint-Malo is a must. This impressive aquarium houses a wide variety of marine species, including sharks, sea turtles, and colorful tropical fish. Explore the different themed areas and learn about the fascinating underwater world through interactive exhibits and educational displays. The highlight of the visit is the Oceanarium, where you can walk through a glass tunnel surrounded by marine life. It's a perfect activity for both adults and children.