If we didn’t have weather satellites and sea surface temperature mapping, we would still always know when we’re in El Niño conditions thanks to these guys. (Oh and yeah, if you didn’t hear it’s another El Niño year. https://www.washingtonpost.com/national/lost-sea-creatures-wash-up-on-california-shores-as-ocean-climate-shifts/2019/04/17/3606cade-5d36-11e9-a00e-050dc7b82693_story.html