The image and caption both comment on the flowing and cyclical nature of toxics - both materially and culturally. Materially, because the pollution is carried by a river. Culturally, because the public discourse around river pollution comes back with the seasons. Perhaps this could be highlighted a bit more in the caption.
The presence of the worker in the river also draws attention to the labour involved in dealing with toxics. The fact that it is an algal bloom as well - the presence of life - also shows how toxics are a more-than-human issue. I would like to hear more about the religous element involved in this work, too.
The image is well composed, and the colours make it aesthetically pleasing. I don't know how it could be improved to extend its ethnogrpahic import. Although it could be a little sharper.
The author took this image, I assume. It is notable that it is taken from above the person working in the toxic river. This highlights a power dynamic of those who are able to stand above and observe (be unaffected in the same way) by the pollution (at least in terms of proximity in their working conditions). The shadow of the author is also an interesting but perhaps unrelated comment on the presence of the researcher in their work. I wonder if this could be tied into the caption perhaps?
The caption could be extended to be more analytic and discuss toxic spaces/landscapes more generally. It is quite short. I like what is written but there are a number of things that could be explored in a little more detail. For example, who manages the river pollution? What are the discourses that circulate around the river pollution?
The image and caption highlight the cyclical nature of public attentiveness to the toxic issue of algal blooms here in a very interesting way. The presence of the worker highlights the labour that goes into managing toxic sites.