Apatanidd Case Maker Caddisfly at Nugget Falls | Bob Armstrong's Nature Alaska

This video shows a very tiny caddisfly larva (about 1/4 inch long) that lives on the rock face at Nugget Falls in Juneau, Alaska
The caddisfly was discovered a few years ago and the species was new to science.
This is (so far) the only place where this species has been documented.
‘It creeps about under the flowing water and feeds on biofilm and algae.
It decorates its case made of pieces of sand with a piece of algae.
What would be some of the advantages for living beneath and near such a roaring waterfall?
Perhaps an abundance of food and in an area relatively free of predation.
To learn more about these caddisflies go to Aquatic Insects in Alaska — Major Groups and Caddisflies by John Hudson, Katherine Hocker, Robert H. Armstrong
And go to page 32.
To learn more about how caddisflies build their cases look at this amazing video https://www.youtube.com/watch?v=Z3BHrzDHoYo