About Roundhouse Aquarium

No-cost ocean & marine life education. This free aquarium sits at the end of Manhattan Beach Pier & is host to classes, parties & camps.

💬 What Parents Say

• 💡Visit for free admission and plan your pier walk accordingly — the aquarium is located at the end of Manhattan Beach Pier, making it a perfect complementary stop while already enjoying the beach and ocean views.
• 🕐Plan visits for weekdays 2PM-7PM or weekends 10AM-7PM to match public hours. Weekend mornings (10AM-12PM) are likely less crowded than afternoon hours, offering a better experience for interactive touch tank activities.
• 💡The interactive touch tank is a key highlight — plan to spend time here engaging directly with sea creatures like starfish and anemones, which visitors consistently mention as the most memorable part of the experience.
• 💡Don't miss the free marine science classes available for underserved children and Title I schools, and check out the Summer Science Beach Camp for deeper educational engagement with local marine life.
• 💡Mark your calendar for Earth Day Celebration (April 25, 10AM-4PM) to experience special ocean science and conservation activities, or volunteer as a summer camp counselor to be part of their educational mission.

Hours