There are a total of 751,931 animals living in these aquariums and zoos. Have you ever been to the non profit marine nature center affiliated with The Bay Institute? It was opened in 1996 and over 600,000 people visit the aquarium each year.
This is unbelievable that over 20,000 aquatic animals from the San Francisco Bay and nearby waters live in that Aquarium of the Bay. New England Aquarium houses 30,000 animals and they are the global leader in ocean exploration and marine conservation.
Other notable aquariums are:
Seattle Aquarium
Shedd Aquarium
Georia Aquarium
Adventure Aquarium
Downtown Aquarium (Houston)
Steinhart Aquarium
Sea World
Sydney Aquarium
Underwater World, Singapore
[Source: Citypass Aquariums Facts And Figures]