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About MaST Center Aquarium
The MaST Center Aquarium is Highline College's marine biology and aquarium facility, located at Redondo Beach. It serves as a teaching institute and public learning center, expanding knowledge about Puget Sound. The 2,500 square-foot facility includes an aquarium with over 15 tanks, holding approximately 3,000 gallons of flow-through seawater and displaying over 250 native Puget Sound marine species.
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Good to know
What’s included
250+ species exhibitsinteractive exhibitsvirtual tour available
- free admission Saturday Discovery Days 10am-2pm
- field trips by appointment
- whale virtual tour available
as of September 2026 — verify on the operator’s site