"Eerie holes have been appearing on Florida's riverbanks, with experts attributing the phenomenon to an invasive fish species. The armoured sailfin catfish, native to South America, has been burrowing into riverbanks to safeguard its eggs and young. While these burrows may seem unusual, they're actually a common sight for freshwater fisheries biologists. However, the impact of these nests on Florida's ecosystems is a concern, with destabilized riverbanks contributing to erosion and affecting the food chain for native species."

Source: https://www.wionews.com/trending/eerie-holes-are-cropping-up-on-floridas-riverbanks-they-are-nothing-but-769761