Please note: The planetarium will be closed for maintenance Sep. 16-18.
Steinhart Aquarium
From the canopy of our butterfly-filled, four-story rainforest to the bioluminescent depths of the little-known "twilight zone," explore the world's most vibrant, vital ecosystems from the heart of San Francisco.
Steinhart Aquarium is one of the most biologically diverse and interactive aquariums on Earth. Home to nearly 40,000 live animals, representing more than 900 unique species, it offers guests an unprecedented view of underwater and terrestrial habitats. From species displayed nowhere else in the world to exhibits about cutting-edge research in little-known ocean ecosystems, a visit to Steinhart Aquarium is full of discovery.
Since 1923, the Steinhart Aquarium has developed a colorful history of firsts. From becoming the first public aquarium to display flashlight fish and coconut octopuses to advancing exploration of the ocean’s mysterious “twilight zone,” innovation and scientific excellence are in our DNA.
Today, Steinhart Aquarium continues to shape the role that modern aquariums play in educating and inspiring the public about the biodiversity and sustainability of our oceans and rainforests.
Explore the aquarium on our interactive map.
Please note: The Swamp will be closed for habitat upgrades beginning September 17. We (and Claude) look forward to welcoming you back later this year. We apologize for any inconvenience!
Exhibits That Inspire
From our Philippine Coral Reef exhibit—the largest and deepest indoor reef in the world—to our charismatic colony of endangered African penguins, the Steinhart Aquarium captivates visitors of all ages.
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Hope for Reefs
The Academy’s bold initiative to research and restore critical coral reef ecosystems focuses on solutions to sustaining these “rainforests of the sea” for future generations.
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Animal Care and Well-Being
Caring for 40,000 live animals goes far beyond daily feedings and regular check-ups. Enrichment programs developed by aquarium biologists ensure that animal residents remain happy, healthy, and engaged.
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Species Survival Plan Programs
Steinhart biologists participate in a variety of breeding programs aimed at conserving species and maintaining genetic diversity in zoo and aquarium populations, including African penguins, frogs, cuttlefish, and corals.
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Scientific Diving
From performing daily dive shows and keeping aquarium tanks pristine to conducting underwater research in ocean depths around the world, the Academy’s scientific diving program is making waves.
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Sustaining Our Oceans
As part of the Academy’s commitment to sustainability, our aquarium biologists and marine scientists work to protect and conserve vital ocean habitats—from restoring coral reef ecosystems to reducing single-use plastics, sustainability is at the center of our science.
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Special Offer 9/1-10/31/19
Autumn awesomeness!
Join or renew by October 31, 2019, and receive free Daytime Admission tickets to share with friends and family. Use promo code AUTUMN. See offer details below.*
Special Offer 9/1-10/31/19 details
*Limited-time offer details: Join or renew by October 31, 2019, and receive up to 3 complimentary Daytime Admission tickets to the California Academy of Sciences. Offer available for Individual, Individual Plus, Teacher, Community Value, and Senior levels (1 ticket), Family and Family Plus levels (2 tickets), and Associate level (3 tickets). Not valid on Explorer or higher levels. Complimentary tickets are valid for 1 year from date of purchase of new or renewing membership and have no cash value. Pick up tickets at the Service Desk. Offer is not retroactive and may not be combined with other offers.
Explore some of the animal kingdom's most outrageous (and successful) strategies for meeting and mating.
Watch reef fish dart through colorful forests of coral while giant rays sail gracefully under your feet.
African penguins establish strong pair bonds and use complex forms of communication in their social groups.
Descend into the twilight zone, where sunlight is scarce and every dive yields surprising discoveries.
The Swamp will be closed beginning September 17 for habitat upgrades. We apologize for the inconvenience.
Discover how animals have evolved fascinating methods of living in and out of water.
Get up close and personal with the coastal creatures that call California tidepools home.
Step inside a living four-story rainforest, home to free-flying tropical butterflies and birds.