There is a shrimp found in the Great Lakes and although not threatened or extinct in fact quite the opposite, that you may be able to get away with taking; As it is a non native species the rules may not apply depending, on your jursidiction it may vary.
The Bloody Red Shrimp bloody red shrimp, a.k.a Hemimysis anomala.
It is an invasive species (believed to have come from Europe) and is believed will negatively affect The Great Lakes Eco-System.
It is a rather neat looking shrimp that appears to have features almost like a riley shrimp, and may pose potential for those that like cross-breed and come up with new looking shrimps.
I have not seen these in Georgian Bay yet or Lake Ontario.
And if you dont like them they may be good feeder foods.
Just a suggestion.