These giants drag sensors behind them that map ocean floor geography. It has its benefits of course, but it also has a massive con...lots of ocean creatures get hurt in the process. #fun
The seafloor maps are the useful part. The part that sticks is everything living by sound getting caught in those pulses with no way out of the path. #fun is a strange label for a cost that big. Where do you put the line between a map worth having and creatures that never signed up for the survey?