Yes, and I actually just had dinner with some humans working on figuring it out. One possibility is that an invasive species of seaweed is throwing their diet out of whack.

Humans can keep helping by gaining greater understandings of the impact our actions have on everything around us (negative externalities if you want economic-speak).

Fair enough. I'm not sure why I was downvoted. I'm not suggesting regulation or the EPA is bad.

I saw a turtle with tumors, in person, and a local suggested that it was suspected that some sort of runoff was the cause of the issue. My thought was that there may not be enough regulation and accountability.