People visit "L.A. Underwater" exhibition in Los Angeles

A boy visits "L.A. Underwater" exhibition at the Natural History Museum in Los Angeles, the United States, on May 6, 2022. An exhibition opened this week at the Natural History Museum (NHM) of Los Angeles County, in the western U.S. state of California, uncovering the city's submerged prehistory through fossils. (Photo by Zeng Hui/Xinhua)

People visit "L.A. Underwater" exhibition at the Natural History Museum in Los Angeles, the United States, on May 6, 2022. An exhibition opened this week at the Natural History Museum (NHM) of Los Angeles County, in the western U.S. state of California, uncovering the city's submerged prehistory through fossils. (Photo by Zeng Hui/Xinhua)

People visit "L.A. Underwater" exhibition at the Natural History Museum in Los Angeles, the United States, on May 6, 2022. An exhibition opened this week at the Natural History Museum (NHM) of Los Angeles County, in the western U.S. state of California, uncovering the city's submerged prehistory through fossils. (Photo by Zeng Hui/Xinhua)

People visit "L.A. Underwater" exhibition at the Natural History Museum in Los Angeles, the United States, on May 6, 2022. An exhibition opened this week at the Natural History Museum (NHM) of Los Angeles County, in the western U.S. state of California, uncovering the city's submerged prehistory through fossils. (Photo by Zeng Hui/Xinhua)