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Announcement All Pratt buildings are currently closed because of COVID-19, however remote and contact-free services are available.

Announcement Public computer usage will be unavailable through the month of December into January to help prevent the spread of COVID-19.

Holiday Closing Services at all Pratt locations will be unavailable Monday, January 18 in observance of Martin Luther King Day.

Read to Reef - Aquarium youth education helper showing kids a horseshoe crab
The National Aquarium in Baltimore

How to Participate

Participating children can request bookmarks October 1-31, 2020, and have through January 18, 2021 to complete the program and visit the Aquarium.

During the month of October call any Sidewalk Service location and request a Reed to Reef bookmark, which will be mailed to your home. Bookmarks are available while supplies last.

Blackout dates are October 30, December 5-6, and December 26-27, 2020.

Get Reading!

Borrow, read or listen to someone read any five aquatic- or conservation- themed books and record them on your Read to Reef bookmark. Need ideas to get started? Check out a PDF list of recommended Read to Reef books. You can pick up library books in person with Sidewalk Service, or browse eBooks in our Digital Library.

Reserve Your Tickets

The National Aquarium is now open, with social distancing and other safety procedures in place. All guests must reserve their visit date and entry time in advance online using the reservation portal at

To reserve your timed entry slot, use the code printed on the bottom of your Read to Reef bookmark. This code can only be used once to redeem four tickets of admission. Children two years old and younger do not require tickets, and if you do not use all four tickets in your transaction they are forfeited and cannot be used on a separate day.

Before your visit, please review the National Aquarium’s updated protocols and procedures in response to COVID-19 before you arrive on-site.

More Information
staff pulling a book from bookshelf

Browse the Catalog

Browse available materials in the Pratt Library catalog.