Show HN: 41 years sea surface temperature anomalies

https://ssta.willhelps.org

Sea Surface Temperature Anomalies Timelapse

Very emotionally powerful to watch something play out, even if I'm already consciously aware of it. Would love a speed where I can watch the whole dataset play out in about 1 minute.
What are we seeing play out? It just looks like some areas are warm and some are cold?
If you tap the images on mobile, there is an animation.