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The MaST Center Aquarium


The Aquarium at the MaST Center holds over 3,000 gallons of water in various tanks. It features 2 large touch tanks, 2 Octopus tanks, various Jellyfish lifestage tanks, a schooling fish tank, and more. In all, the aquarium houses over 250 species of marine creatures, all native to the Puget Sound and surrounding waters.

Divers of the MaST Center frequently go on collecting trips, so there is always something new to see. Make sure to ask our volunteers about new arrivals!

Below is a guide to species commonly seen in our Aquarium, and in the salt waterways of the Pacific Northwest. Due to change in seasons and displays, not all of these species are present at any given time.

Sculpins, Gunnels, Rock Fish, etc.

Jellyfish, Anenomes, Corals, etc.


Lamp Shells

Cephalopods, Snails, Nudibranchs, Bivalves, etc.

Shrimp, Crabs, Barnacles

Sea Stars, Sea Cucumbers, Urchins