In 2021, when scientists were exploring Antarctica’s Filchner Ice Shelf seafloor, they discovered 'underwater city' with 60 million fish nests & its own natural energy source

Filchner Ice Shelf Fish: Scientists discovered a vast Antarctic icefish colony beneath the ice of the Weddell Sea, revealing millions of nests spread across the seafloor. The colony was located near a flow of warmer water, creating what researchers described as a ‘thermal oasis. The area supported an immense concentration of biomass and attracted predators such as Weddell Sea seals.

Raccontata daeconomictimes.indiatimes.com