Forever chemical reaches fish before they even hatch, new study reveals

There is a forever chemical lurking in the world's oceans that could be fundamentally altering the biology of marine life before it even hatches. PFOS, a notorious member of the PFAS family of chemicals, is known for its ability to bioaccumulate, binding specifically to proteins in the blood and liver. While it's long been recognized as a pollutant, scientists are only beginning to understand how it changes an organism from the inside out.