Welcome back! The Roundhouse Aquarium is now open!
Reservations are no longer required. Guests will be checked in at the front door.


Public Hours:

Monday-Friday 2PM-5PM

Saturday-Sunday 10AM-5PM

Special Hours:

Closed for maintenance Friday, October 7

*Visit our Facebook for updates on our hours.

Water Harvest Festival

Saturday, October 22 | 10AM-2PM

Celebrate and explore the wonderful world of water with West Basin Municipal Water District at The Edward C. Little Water Recycling Facility in the city of El Segundo. Learn more by clicking the button below.

Roundhouse Aquarium Speaker Series: Marine Mammals of the South Bay

Wednesday, October 26, 6:30PM 

Join us as our own Eric Martin, Aquarist Director, shares his photos, videos, and knowledge of marine mammals! Find out what is swimming just off the pier. 

Skechers 14th Annual Pier to Pier Friendship Walk

Sunday, October 30

The Roundhouse will have a booth at the Pier to Pier Friendship Walk.  Look for us when you’re walking! Click the link below to learn more about the event or donate.

The Roundhouse Aquarium is committed to providing ocean science education for all.





The Board of Directors for the Oceanographic Teaching Stations, Inc. (OTS) is proud of its long history of providing education equity for underserved children. Many of the young students who have attended our marine science classes are from disadvantaged or low-income families, or attend Title I schools. These marine science classes teach the children about the sea animals that live off our coast and the importance of protecting their environment from pollution. 

Since providing education equity for underserved children has historically been a priority for OTS, OTS hereby formally adopts a policy of providing educational equity for underserved children when providing free marine science classes at either the Roundhouse Aquarium or at schools. These OTS onsite and outreach classes provide access to underserved children and Title I schools that greatly benefit these children in their understanding of marine science.



Fun for students of all ages!


Discover the wonders of the ocean.


Immerse and experience the ocean.


Connect closer and inspire.

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