Write a two to a three-paragraph article describing an exciting discovery. Pay attention to your use of the passive voice. Vary your sentence structure and the conjunctions you use. Your article should be 150–200 words long.

After the disaster of coronavirus, a positive effect on the ocean had discovered by the scientist. Pink dolphins appeared in the sea of Do Son, Hai Phong. This is a rare fish, listed in the Red Book of Vietnam at Endangered (EN), and recent years saw this dolphin species. According to the Representative of Vietnam Association for the Protection of Nature and Environment, there appeared in the ocean showed that the restoration of the marine environment, the impact of active marine fishing and the discharge of waste from "hundreds of rivers into the sea" have been better controlled. In a short time after the covid, the marine ecosystem had been improved without fishing when the whole country focus to create the vaccine protect people.