This GIF is interesting because it shows how a very well-known limnological relationship (total phosphorus versus chlorophyll concentration) changes at the annual scale across about 20 years. There are plenty of lakes that seem to track that rough 1:1 line, but quite a few that do not and do quite interesting things. The lakes that seem to behave more like ping-pong balls are particularly interesting.
Samantha Oliver made this GIF using data and results from her recent paper in Global Change Biology published in 2017. She also shared her code for the above GIF here; as well as the data that the article is based on. You can read more about this article at this blog and this press release.