Please, study hard for Test (1).....If the blobfish get extinct, we will have lots of crabs and mollusks which will affect the sea ecosystem.The Persuasive Letter about endangered animal will be included Dear Editor, I am writing to ask for help in saving an endangered creature, the blobfish.Therefore, we have to learn more about it. Another fact about the blobfish, that it eats crabs and mollusks.For example, it doesn't have any bones or muscles.