Highline MAST Aquarium at Redondo

Highline MAST Aquarium at Redondo Come check out our FREE aquarium with over 250 species of marine life. Highline College's Marine Scie
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The Marine Science and Technology (MaST) Center is the marine laboratory for Highline College. MaST is dedicated to expanding knowledge about the Puget Sound and the surrounding environment through teaching, outreach, and research. Located 4 miles south of campus at Redondo Beach and halfway between Seattle and Tacoma with easy access to a huge diversity of nearby habitats, our 2,500 square-foot f

acility offers public space, classroom, laboratories, office and research areas with state-of-the-art equipment 3,000 gallons of flow-through saltwater tanks, holding more than 250 species of local marine life.

Big news from the MaST Center! Our very own Director, Rus Higley, just stepped back onto dry land after spending 8 incre...
06/17/2026

Big news from the MaST Center! Our very own Director, Rus Higley, just stepped back onto dry land after spending 8 incredible days at sea. Check out his blog about going out to sea, facing his fears and seeing new horizons.

Rus was on board the state-of-the-art UC San Diego R/V Sally Ride as part of an amazing expedition with STEM SEAS.

If you aren’t familiar with STEM SEAS, they are a fantastic organization dedicated to opening doors for college students—especially those at two-year institutions like Highline College. They provide hands-on, life-changing opportunities for students to explore careers in marine and ocean sciences right from the decks of cutting-edge research vessels.

We are so proud to have our team directly involved in programs that bridge the gap between classroom learning and real-world oceanography. Stay tuned, because we can’t wait to share some of the stories, science, and insights Rus brought back from the Pacific!

Welcome back to shore, Rus!

The digital clock on the wall in the lab says 158:21:40:00, which probably doesn’t mean a lot to most people. The first number, 158, means that today is the 158th day of 2026, while the rest tells me it is 9pm (2100 military time), 40 minutes, and zero seconds. I’ve never counted days in the yea...

06/11/2026

Looking for sixgill Sharks 200 miles off the coast of Vancouver Island with the UC San Diego R/V Sally Rideand STEM SEAS

05/18/2026

The 2026 Shark in the Park on July 12th is in the planning stage and we are looking for vendors who want to join the celebration of Des Moines as the Sixgill Shark Capital of the World. Imagine Earth Day meets Farmer's Market meets Street Fair. Over 30 vendors have already confirmed and we are looking for another 10-20 more to round out the options. Get yourself in front of over 1,500 people. Learn more and RSVP at https://mast.highline.edu/shark-in-the-park/

It's time to vote for your favorite little aquarium in the PNW. Sadly there isn't a direct "aquarium" option so perhaps ...
05/18/2026

It's time to vote for your favorite little aquarium in the PNW. Sadly there isn't a direct "aquarium" option so perhaps nominate us as...Under "Things to Do" The Best Attraction, The Best Family Attraction, The Best Museum, or even the Best Place to Take Visitors or Under "Education" Summer Camp...or even all of the above.

To help you out with the details: Business Name: MaST Center Aquarium which should pop up all the rest of the optional information.

Vote once per day from June 8 through June 26.

05/04/2026
Today is the day! Stop by for the shell-ebration to collect trading cards and stickers of Emery's fishy friends 🐙🦑🪼🦀🦐🦈🐠🦦...
04/25/2026

Today is the day! Stop by for the shell-ebration to collect trading cards and stickers of Emery's fishy friends 🐙🦑🪼🦀🦐🦈🐠🦦🐢🦅🦭

04/25/2026

Monte Cristo’s return to the wild 🌊 Thanks to Highline MAST Aquarium at Redondo for responding to this harbor seal back in February and getting her to care. Two months of medication, food, and recovery, and she was able to return to the ocean!

The MaST Center Aquarium will be closed today, March 14th, due to safety concerns and power outages. But don’t worry, yo...
03/14/2026

The MaST Center Aquarium will be closed today, March 14th, due to safety concerns and power outages. But don’t worry, you can still enjoy the MaST Center Aquarium virtually! Watch videos on our YouTube channel to learn more about marine life, get an up close look at our whale skeleton with a 360 VR interactive, or explore the dock with our virtual tour. Thank you for your continued support and understanding. We hope to see you next weekend!

YouTube Channel - https://www.youtube.com/
360 Gray Whale & MaST Virtual Tour - https://www.mast.highline.edu/visit

03/09/2026

Check out Explore Seattle Southside’s talking up the MaST. Thanks for spreading the word!

Address

28203 Redondo Beach Drive S
Des Moines, WA
98198

Opening Hours

10am - 2pm

Telephone

+12065924000

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