Lake Superior

Mark explains the history of the Keweenaw Waterway.
We are aboard the SS Agassiz,  one of the vessels Michigan Tech runs out of its Great Lakes Research Center.

We are headed northwest out of the Waterway toward the open lake.
That's the Portage Lake Lift Bridge, which links Houghton and Hancock.

Captain Roblee and Terrianna instruct Denali, Ryan and Jonathan on the usage of the ten-thousand-dollar instrument that measures depth, temperature, and oxygen content of Lake Superior.

The kids take down the data for later reference in the limnology lab at the GLRC.

Terrianna is casting for phytoplankton and zooplankton.

The kids sift through samples they've dredged from the lake floor, forty-six meters below.

In the limnology lab, Trent and Ryan dissect fish stomachs.

Julia reviews the Great Lakes food web, which differs from lake to lake.

What's in there?

To her extreme delight, Isobel found a wriggling bloodworm in one of the lake samples.