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Sunrise creates an orange sky behind the D.J. Angus at its dock in Grand Haven, MI.

Vessel Scientific Equipment

Visiting students measure water quality in the D.J. Angus's research laboratory.
An AWRI instructor demonstrates the use of a plankton tow net.
An AWRI deckhand and visiting student collect water using a Van Dorn sampler onboard the D.J. Angus research vessel.
Jamie Cross displays a Florel-Ule scale, a series of colored water in vials that provides a measurement of water clarity not requiring expensive machines..
Page last modified June 8, 2026