Fanwort, known in science as Cabomba caroliniana, is admired for its delicate, fan-shaped submerged leaves that expand like miniature green feathers along slender stems. Sometimes called Carolina water shield or simply Cabomba, it inhabits still or slow-moving waters across the Americas and beyond. The finely divided leaves of Cabomba caroliniana create a cloud-like texture underwater, providing refuge for small fish.

The species grows rapidly through vegetative fragments, contributing to its spread in natural systems after escaping the aquarium trade. Cabomba caroliniana also produces small floating leaves that contrast with its submerged foliage, adding to its visual complexity. When established, dense stands can influence water flow, light availability, and local plant diversity. Its mix of delicate structure and vigorous growth makes it a striking but ecologically influential aquatic plant.