24. -, however,they remain an endangered species. A) Sea otters are vulnerable to threats such as chemicals , pollutants and oil spills B) Sea otters have to cope not only with shrinking habitats but also shortage of food C) Until recently, sea otters were almost hunted to extinction for their fur D) Otters have been hunted and trapped as they were seen as threats to fish stocks E) Otters have not gone extinct despite the threats they have faced over the years