The Open Sea exhibit at the Monterey Bay Aquarium is a visually immersive experience. It allows visitors to see the open ocean at a depth of roughly 25 feet underwater while standing in a comfortably warm viewing room.
Visitors enter a dark viewing theater with a 90-foot transparent wall that rises high to the ceiling. In this place, humans appear as dark silhouettes against the blue world beyond where silver and grey sea turtles, sharks, rays, tuna and a variety of other fish are in constant motion.
Lances of light piercing into the depths and brightly illuminate any creature that swims through the shafts.
I have found that just before closing time at the aquarium, you can enjoy this vista with just a hand-full of others, or in some cases have a precious minute to enjoy it all by yourself.