A reef shell lies on a beach as the sun sets on Lady Elliot Island located north-east of the town of Bundaberg in Queensland, Australia, June 10, 2015. UNESCO World Heritage delegates recently snorkelled on Australia’s Great Barrier Reef, thousands of coral reefs, which stretch over 2,000 km off the northeast coast. Surrounded by manta rays, dolphins and reef sharks, their mission was to check the health of the world's largest living ecosystem, which brings in billions of dollars a year in tourism. Some coral has been badly damaged and animal species, including dugong and large green turtles, are threatened. UNESCO will say on Wednesday whether it will place the reef on a list of endangered World Heritage sites, a move the Australian government wants to avoid at all costs, having lobbied hard overseas. Earlier this year, UNESCO said the reef's outlook was “poor”. (Photo by David Gray/Reuters)

A health worker wearing a protective suit is disinfected inside a portable tent outisee the Gat Andres Bonifacio Memorial Medical Center during an enhanced community quarantine to prevent the spread of the new coronavirus in Manila, Philippines, Monday April 27, 2020. (Photo by Aaron Favila/AP Photo)

Children run past used caskets at a crematorium facility in Manila on April 29, 2020. Most of the Philippines is under quarantine to contain the spread of the coronavirus that has infected over 7,000 people and killed at least 500 in the country. (Photo by Maria Tan/AFP Photo)

Comedian Chevy Chase gets a kiss on his ear from co-star Benji as the two held a press conference in Los Angeles, September 6, 1979, at which they announced their up-coming movie “Oh Heavenly Dog” would begin filming this month. The film will be shot on location in London, Berlin and Paris; but due to British quarantine laws a double will be used for Benji at the London location. (Photo by Nick Ut/AP Photo)

A masked tourist poses for a souvenir photo next to a graffiti titled “Mobile World Virus” depicting “La Gioconda”, aka Mona Lisa, with a mobile phone and a medical mask, by urban artist TVBoy, close to the Sant Jaume square in Barcelona, Spain, 09 March 2020. Barcelona's Deputy Mayor and two town councillors are in quarantine after they were in contact with a City Hall's worker who was tested positive for the COVID-19 coronavirus. (Photo by Quique Garcia/EPA/EFE)

Local youth representatives dressed a Stormtrooper and Darth Vader (L-in black) from the Star Wars film franchise patrol in a wooden boat around a submerged village to remind residents to stay at home during the enhanced community quarantine in suburban Manila on May 6, 2020, as part of government's efforts to combat the spread of the COVID-19 coronavirus. (Photo by Ted Aljibe/AFP Photo)

Miranda state beauty pageant contestant Luiseth Materan, wearing a protective face mask issued by the Miss Venezuela beauty pageant, arrives to the Venevision television station to prepare for a meeting with judges, in Caracas, Venezuela, Friday, September 18, 2020. Quarantine rules and social distancing has forced the contestants to train at home and online with limited access to the venue itself where strict measures are in place. The pageant is due to take place on Sept. 24. (Photo by Ariana Cubillos/AP Photo)

Friends take photos of themselves on La Ultima beach which was reopened this week after it was closed for months amid the COVID-19 pandemic in La Guaira, Venezuela, Friday, October 23, 2020. Strict quarantine restrictions forced the closure of beaches across the country in March and reopened this week in hopes of revitalizing the battered economy. (Photo by Matias Delacroix/AP Photo)