Tiny Computers Reveal How Tahiti's Tree Snails Evade a Fierce Predator

You got me at "tiny computers".. Researchers used the Michigan Micro Mote (M3), the world's smallest computer at the time in 2014, glued to the shells of rosy wolf snails, to study their behavior.

Also linked from the article is an even smaller "computer" developed by the same team at University of Michigan.

A 0.04mm³ 16nW Wireless and Batteryless Sensor System with Integrated Cortex-M0+ Processor and Optical Communication for Cellular Temperature Measurement

https://news.umich.edu/u-m-researchers-create-worlds-smalles...