Before replying I searched the entire page and did not find your quote anywhere, including the captions. To make sure I did not miss anything I even only searched for a single word from your quote, "hydrogen", then "animals", and there are only three (two) places in the text, none in the captions.

I'm not sure if NYT articles are known to change their images and captions for different viewers? I checked the archived link too.

It's the lower third at [0:28](https://vp.nyt.com/video/2025/11/07/154186_1_07vid-spider-we...) in the video.