Hermodice carunculata, commonly known as the bearded fireworm, is a marine bristle worm found in the warm coastal waters of the Atlantic Ocean and the Mediterranean Sea. Notable for its bright coloration, it has a flattened body with tufts of sharp bristles that can inject venom, causing a burning sensation. This species is primarily a scavenger but sometimes preys on coral, contributing to coral reef health by controlling algae growth.

Hermodice carunculata, commonly known as the bearded fireworm, is native to the warm waters of the Atlantic Ocean, primarily found in the Caribbean Sea, the Gulf of Mexico, and along the coasts of the southeastern United States. It is also present in the Mediterranean Sea, having been introduced there, and is considered an invasive species in some areas.

Hermodice carunculata typically inhabits shallow marine environments, often found at depths ranging from 1 to 40 meters. It prefers warm waters with temperatures usually above 20°C. The species is frequently found in coral reefs, seagrass beds, and rocky substrates, where it can find ample food sources and shelter.

The bearded fireworm is a benthic predator and scavenger, feeding on a variety of marine organisms, including dead fish, corals, and sea anemones. It plays a role in the ecosystem by controlling populations of its prey and contributing to the detrital food web. Its bright coloration and bristle-like setae serve as a defense mechanism against predators.