Humans tend to abuse sea creatures, so digital artist Neil Mendoza gave them a way to fight back. As Smashie the fish swims around his aquatic habitat, he takes aim at the human habitat outside; the hammer drops periodically when a rotating cam releases it.
Mendoza created the project through Autodesk’s artist-in-residence program. You can build your own “fish hammer actuation device” with the instructions here.
from Futility Closet https://www.futilitycloset.com/2017/11/13/marine-warfare/