Iron-Tongued Mollusk: Meet the Bizarre Ferreiraella populi and its Poop-Eating Worms (2026)

Meet the Deep-Sea Wonder: A Mollusk with an Iron Tongue and Hitchhiking Worms

What's a deep-sea creature that's both armored and covered in worms, and also has a rasping tongue? It's not just a nightmare; it's a fascinating new species of deep-sea mollusk named Ferreiraella populi. This tiny creature, discovered in the depths of the Izu-Ogasawara Trench in Japan, has already captured the attention of scientists and social media alike.

Ferreiraella populi, a chiton, is a type of herbivorous mollusk with an iron-covered radula (its rasping tongue), eight armored shell plates, and poop-eating worms near its tail. It was officially described in a Biodiversity Data Journal study, adding to the growing list of mysterious and specialized deep-sea animals.

A Social Media Sensation

Ze Frank, a science YouTuber, explains that chitons are known for their ability to attach to things, often rocks. Their bendy-bendy plates provide protection while they use their radula to scrape and eat algae. The discovery of Ferreiraella populi at 18,045 feet (5,500 meters) below the surface highlights the specialized nature of deep-sea environments.

The naming process of this odd mollusk was an interactive affair. Frank invited viewers to suggest names for the specific epithet (the second part of the name) along with explanations. The response was overwhelming, with over 8,000 social media submissions in a single week. One standout suggestion, Ferreiraella ellaellaeheheh, was a playful reference to Rihanna's music.

The Power of Naming

The first team to publish a new species' scientific description gets to choose its name, following specific rules. Ferreiraella populi's 'populi' means 'of the people' in Latin, and it was chosen from 11 submissions. Other contenders included Ferreiraella ohmu, honoring a chiton-like animal from a Studio Ghibli film and acknowledging its discovery in Japan.

Julia Sigwart, a co-author of the study, emphasized the rarity of such a quick scientific description and naming process. It typically takes ten to twenty years for a new species to be studied, described, named, and published. Many species, especially marine invertebrates, face the threat of extinction before discovery. Ferreiraella populi's swift naming is crucial for marine conservation, especially with the looming threat of deep-sea mining.

A Window into Extreme Life

Ferreiraella populi's discovery sheds light on the mysterious life forms thriving in extreme deep-sea environments. As we continue to explore these environments, we uncover specialized and unique creatures like this one, contributing to our understanding of marine biodiversity.

Iron-Tongued Mollusk: Meet the Bizarre Ferreiraella populi and its Poop-Eating Worms (2026)
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