Planetarium and Aquarium Open House – Costa Mesa
Orange Coast College Planetarium & Dennis Kelly Aquarium
Free and open to the public – Sponsored by the Port of Long Beach
We enthusiastically invite you to attend our Open House event! Come explore our aquarium, meet all of our critters, and participate in exciting activities and scientific demonstrations. Become immersed in our wonderful oceans by seeing our planetarium shows. And learn more about local ecological and environmental projects by talking to our host of expert organizations at their booths.
What is the Planetarium and Aquarium Open House in Costa Mesa?
The Planetarium and Aquarium Open House is a free family event at Orange Coast College featuring aquarium exhibits, live marine animals, planetarium shows, hands-on science activities, and booths from local environmental organizations.
When is the Planetarium and Aquarium Open House?
Saturday, March 14, 2026
12:00 PM – 4:00 PM
Where is the event located?
Orange Coast College Planetarium & Dennis Kelly Aquarium
2701 Fairview Rd, Costa Mesa, CA 92626
Is the Planetarium and Aquarium Open House free?
Yes. Admission is free.
What age is this event best for?
The event is best for school-age children (ages 6–12), but families with younger or older children are welcome.
What can kids do at the Open House?
Kids can explore aquarium exhibits, watch planetarium shows, meet marine critters, participate in science demonstrations, and learn about ocean and environmental conservation projects.