Great Lakes Aquarium
Lake Superior fish, river otters, raptors, wetlands, global freshwater systems, and harbor windows make water chemistry and watershed connection tangible.

Artwork inspired by George Morrison
Freshwater is the museum’s advantage. Native fish, lake sturgeon, river habitats, and hands-on watershed exhibits show that an inland sea depends on tributaries, wetlands, temperature, and human infrastructure far beyond its shoreline.
The building looks directly onto Duluth Harbor, allowing ships, ice, gulls, and weather to become live exhibits. Compare a tank’s controlled conditions with the harbor outside, then ask what invasive species, warming water, runoff, and dams change in both.
- Focus
- Freshwater ecosystems
- Setting
- Duluth Harbor
- Animals
- Fish, otters, birds
Quick guide
- Regional anchor
- Trace Lake Superior habitats from shore to depth
- Live comparison
- Compare the tanks with Duluth Harbor outside
Trace freshwater from tributary to tank to open lake
- Start with
- Use the Isle Royale tank to identify how cold-water species occupy different depths and structures.
- Look closely at
- Watch river otters through a full activity cycle instead of leaving after one fast pass.
- Connect the story
- Compare the Duluth Harbor view with exhibits about watersheds, shipping, and Lake Superior ecology.
- Plan around
- Check feeding times and school-group traffic, then leave room to explore the working waterfront outside.
Good to know
This is primarily a freshwater aquarium; visitors expecting a large ocean-shark collection will miss what makes it distinctive.
Notice these
- Isle Royale tank
- River otters
- Duluth Harbor windows