This suggests that the toxic substances are not broken down, and as it progresses up the food chain, it becomes much more serious.
動物性浮游生物以植物為食，海中大型動物再以動物性浮游生物為食，毒物一再累積，數量和濃度有增無減，最後若進入人類口腹，恐怕就要造成中毒事件了。