It’s fraud, but it’s ok if you support the endgame.
This was truly an alarming result. However, the maximum solubility of DDT in seawater is only 1.2 ppb, nowhere near 500 ppb, so the scenario Wurster reported was physically impossible. In fact, in order to get so much DDT to dissolve, Wurster had been forced to use not seawater, but a saltwater/alcohol mixture as the medium for his experiment. It is hardly surprising that marine algae stopped functioning when thrown into such stuff. In contrast, other scientists found no harm or loss of activity of the same species of marine algae that Wurster used when immersed in actual seawater saturated to the limit with DDT.