I’ve seen a few ~aesthetic~ photos of rock stacks in rivers recently and this is just a reminder that you are destroying habitat when you move rocks around in rivers and streams.
In addition to dragonfly nymphs, rocky river beds are home to lots of other larval invertebrates like damselflies, mayflies, water beetles, caddisflies, stoneflies, and a bunch of dipterans. Not to mention lots of fish and amphibians!
Plus large scale rock stacking can change the flow of a stream and lead to increased erosion.
This is a longhaired calico cat named Nori. Her portrait was done with Derwent pastel pencils on 30x40 cm (12x15.5 in) pastelmat. The original color of the pastelmat was buttercup (a light yellowish color) and I completely covered it with pastel because the background was too light for the cat to stand out. I love working with pastel pencils!