Tried to get some Dytiscid beetle photos. Instead I got this!
EDIT: Identified as a Fairy shrimp (Eubranchipus sp ).
Also got one awful Dytiscid beetle photo, and one semi-decent Dytiscid beetle larva photo.
This ain’t my last attempt to get a decent Dytiscid shot.
EDIT: Could be Haliplidae or Hydrophilidae instead of Dystiscidae, I guess.
Dytiscid beetle
Dytiscid beetle larva
Mosquito larva with bonus Collembola in the upper right.
a little wild 
Hard to do photography, done very well.
Thank you, it was a lot of fun!