it affects s their mimitochondra at this level, so that it's a mitochondrial poison. it can affect their muscles. if the mitochondriaa are dadamaged in e muscles, it can cauause paralys. it also causes immune suppression in these crabs. meaning that they are much more susceptptible to bacterial infections and fungal infections when co-exposeded with imidacloprid.. >> craig downs also studies the impact of imidacloprid on sea urchins. >> neonicotinoids cause dna damage in sea urchin sperm as lowow as 500 parts per trillili. it causes s developmental abnormalities as low as 5 parts per trillion. it means that they're a mutagen. um, it meanss there's a d direct t threat to e rreproduductive fitntness of the entire biodiversity of marine environments. if you have damage to sperm or if you have damage to eggs,s, the next generation will not be as fit or might not come into existenence at all. um, so it threaeatens sterility. >> the meso-american reef stretches 700 miles from the northern tip of mexico's yucatan peninsula to honduras. it ihohome ta wiwideiversisi of marinli