Image:CAS-Aquarium1.JPG Image:CAS-Aquarium-ButterflyFish.JPG|Butterfly Fish Image:CAS-Aquarium-Giant Sea Pen.JPG|Giant Sea Pen Image:CAS-Aquarium-Jellyfish.JPG|Jellyfish Image:CAS-Aquarium-Piranha2.JPG|Piranhas Image:CAS-Aquarium-Whiskers Coral.JPG|Whisker Coral Image:Ca-academy1.JPG|Swamp display at the California Academy of Science Image:CAS-Foucaults Pendulum.JPG|Foucaults Pendulum Located within the basement of the California Academy of Science, a number of the tanks have open water areas that are visible from the main floor areas upstairs.