children silhouette at aquarium


learning at the aquarium


Children at the aquarium


The National Aquarium is a nonprofit aquatic education and conservation organization. We are deeply grateful to all our members, who support our mission to inspire conservation of the world's aquatic treasures.

Membership Benefits

  • Free unlimited admission
  • Express entry
  • Special reduced pricing for guest tickets
  • Discounted parking
  • Free member-only events
  • Discounts on special programs and events
  • Reduced prices on merchandise and food
  • Subscription to Watermarks, the National Aquarium magazine

Membership Levels

$75 Full member benefits for one named adult JOIN NOW
$145 Full member benefits for two named adults, or one named adult and one guest per visit JOIN NOW
Best Value!
$195 Full member benefits for two named adults, or one named adult and one guest per visit, plus up to four children (ages 3-21) per visit JOIN NOW
Ocean Ambassador
$250 Full member benefits for two named adults or one named adult and one guest per visit, up to six children (ages 3-21) and two guests per visit JOIN NOW
Donor Society


Members who support the mission of the National Aquarium by making annual contributions above and beyond the cost of a standard membership JOIN NOW

Membership FAQ

Can I visit if I don't have my membership card?

Yes! Membership cards are requested to speed entry, but a valid photo ID can also be presented at the member desk if you've forgotten your card.

If your card(s) have been lost, replacements to be printed at the member desk, or you can email us at

Can I apply my Aquarium ticket purchase toward a membership?

Yes! Within 30 days of your purchase you can apply a portion of the cost of general admission tickets to a new membership for the ticket holders.

Level Maximum applied from ticket purchase
Individual 1 adult general admission ticket
Dual 2 adult general admission tickets
Family 2 adult general admission tickets and up to four children's tickets
Ocean Ambassador 4 adult general admission tickets and up to six children's tickets

For tickets purchased online, contact us at 410-659-4230, Monday through Sunday, 9:00 am to 4:30 pm.

For tickets purchased onsite at the box office, you must have the original paper receipt for the tickets. Please mail us the receipt, along with a completed membership application form and a check for the balance, to:

National Aquarium, c/o Membership 

501 East Pratt Street

Baltimore, MD 21202

Is my membership tax deductible?

Yes. The National Aquarium, Inc. is a 501(c)3 tax-exempt organization (EIN 52-1121163). Your membership donation is tax-deductible within the guidelines of U.S. law. For qualifying memberships you will receive an acknowledgement stating the value of any tangible benefits, including printed admission tickets, if they were received.

What are Member Evenings and how can I register to attend?

Member Evenings are special monthly events where member can enjoy a relaxing crowd-free visit to the National Aquarium. These events are free to members; member guest tickets are $25 each. Learn more here.

Can my babysitter bring my children to the Aquarium?

Yes! When none of the adults named on the membership can attend, one sitter may accompany children covered by the membership free of charge. The sitter must possess your membership card, their photo ID, and a signed note from an adult member identifying the sitter and children attending. 

*The sitter policy applies to Dual, Family, Ocean Ambassador and Patron-level memberships.

Who do I contact with questions about my membership?

Email us at and we will be happy to respond by the next business day. You can also contact us by phone at 410-659-4230, Monday through Sunday, from 9:00 am to 4:30 pm.

See Entire FAQ List

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Exclusive Member Events

These special free events are exclusively for our member family, and are our way of saying thank you!


Member Event Photos

Check out photos from some of our recent events exclusively for National Aquarium members!






Contact Us Today

The National Aquarium, Inc. is a 501(c)(3) organization (EIN 52-1121163). Contributions are tax-deductible as allowed by law. You'll receive an acknowledgment stating the value of any tangible benefits received.