This photo shows maybe half of the exhibit, which isn't very large and all indoors. I cannot remember whether the light coming down is from a portion of the enclosure being open to the elements (maybe partly outdoors?) or simply massive skylights. Originally the otters were the first exhibit that was seen on the way into the aquarium, but now it is the very last habitat that is passed on the way out the door. I think that the exhibit is rather nice, although a tad on the small size, and the otters are as active as to be expected from that species. Also, the pool is only about 3 feet deep.