Identificaciones de absentfish

in a still pond, very small (<2 mm length)

Macroscopically, it looks of the color of the outer frame.
Compare to: https://www.inaturalist.org/observations/192147134

the tiny dot in the middle

These were very small white orb like creatures with a worm-like body using appendages like paddles to swim

Parasite

1.3 mm nose to main body rear. Found in water dipped from a roadside marshy area.

NGA LTER, PWS2 VERT MULTINET

what are these little guys? we always find them on halibut