Hundreds of these disgusting little things inside a dead Plain-Bellied Water Snake, and definitely the cause of death. One of them bit me, and now I’m freaking out. I can handle any snake, spider, insect, but parasitic worms are the one thing I absolutely cannot handle!
Abundant on the bedrock. Many digitate sponges and some close to ~1' across
Pulled from snow melt in a vernal pool via dip collection