"Appendages of a common brine shrimp" by Dr. Igor Siwanowicz

The intricacy and color depth of this one just floor me... It came in 8th place in the Small World competition in 2014, but if you ask me it should have ranked higher, in spite of the high quality of the competition!

https://www.nikonsmallworld.com/galleries/2014-photomicrography-competition/appendages-of-a-common-brine-shrimp