I had to fight the urge to close the tab each time one of those damn sea creatures lazily swam in front of the text I'm trying to read, but the fascinating writing and subject matter just wouldn't let me. It's like the author wanted to impart just a bit of the torture experienced by the featured crew members, as they fought to complete the project in spite of a fatal lack of vision.
NoScript fixes this.
It actually makes Firefox hang for a few seconds.
I find 'Reader Mode' usually makes for a better experience on Firefox (especially mobile).