Usually animal preservation is a passive effort, creating protected zones or taking other measures to protect plants and animals from humans. But scientists and students at the Polytechnic Institute in Massachusetts want to help protect coral reefs from an invasive species in a more aggressive fashion: They're building a robot designed to autonomously hunt for and harvest lionfish threatening coral reefs.
https://www.popularmechanics.com/technology/robots/a22839698/lionfish-hunting-robot/