MaST Environmental Center (courtesy Mast)
2823 Redondo Beach Dr. S, Des Moines WA 89198
Boat Launch, Picnic Facilities, Restrooms, Visitor Center, Wheelchair Accessible
The Marine Science and Technology (MaST) Center is the marine science laboratory for Highline Community College. The MaST Center is dedicated to expanding knowledge about the Puget Sound and the surrounding environment through teaching, outreach, and research. The 2,500 square-foot facility offers public space, classroom, laboratories, offices, research areas with state-of-the-art equipment and an aquarium. The Aquarium holds over 15 tanks totaling approximately 3,000 gallons of flow-through seawater, and displays over 250 native Puget Sound marine species.
MaST is located on the pier at Redondo Beach in the City of Des Moines. The facility is currently closed due to COVID restrictions.
It also offers a twice monthly speaker series and “Live Dive” on the second Saturday of each month. All events are FREE.
Seals, sea lions and river otters are commonly seen around the pier. Look west towards Vashon Island to spot whales. Resident orcas (J, K and L pods) are most often seen October through February. Bigg’s (transient) orcas might be seen throughout the year. Humpbacks and gray whales are occasionally seen in spring and summer.