A closer look
Sucking up ocean water to stabilize a cargo vessel sounds smart until you realize you're kidnapping billions of marine hitchhikers. Ballast tanks inadvertently became massive aquariums for invasive crabs, algae, and mussels that historically decimated foreign ecosystems upon discharge. Now, systems like Alfa Laval’s PureBallast run that ocean water through blindingly intense ultraviolet light reactors on board. The process brutally scrambles the DNA of any microscopic stowaways before they can see the light of day, turning the ballast tank into an ecological dead zone.
