China perform during the mixed team free preliminaries on day seven of the Doha 2024 World Aquatics Championships at Aspire Dome on February 8, 2024 in Doha, Qatar. (Photo by Clodagh Kilcoyne/Reuters)
The Mexican singer Peso Pluma performs on his Éxodo Tour at the Intuit Dome in California, US on August 24, 2024. (Photo by Christopher Polk/Billboard/Getty Images)
Musician Nina Chub poses on the red carpet for the 2022 MTV Europe Music Awards (EMAs) at the PSD Bank Dome in Duesseldorf, Germany on November 13, 2022. (Photo by Thilo Schmuelgen/Reuters)
Macropinna microstoma is the only species of fish in the genus Macropinna, belonging to Opisthoproctidae, the barreleye family. It is recognized for a highly unusual transparent, fluid-filled dome on its head, through which the lenses of its eyes can be seen. The eyes have a barrel shape and can be rotated to point either forward or straight up, looking through the fish's transparent dome. M. microstoma has a tiny mouth and most of its body is covered with large scales.