This odd-looking creature, Eulagisca gigantea, is just 8 inches long and swims in the chilly waters around Antarctica.
The organism belongs to the polycheate class of marine worms, which are also called bristle worms. The golden bristles that ring E. gigantea's body could be used for swimming, creeping along the seafloor or for defense.
Its mouth is tipped with a sharp-toothed maw that makes E. gigantea look like Tim Burton's idea of a Christmas ornament.
This may look like the marine worm's head, but it's actually a retractable pharynx. When the worm feeds, a toothy section of this pharynx extends to a length of 2 inches (5 centimeters), according to a photo in the Smithsonian Museum of Natural History's collection.
Bristle worm - 10
When the pharynx is retracted, the worm has this appearance.
The worm's sharp teeth suggest that it chows on other animals or scavenges their remains.
Bristle worm - 1
Here's another shot of the extended pharynx of the bristle worm living in Antarctica.
Like other marine worms in this group, E. gigantea has several leg-like parapodia encircled with hard bristles. The bristles can make the animals difficult to swallow and, in some species, can hold venom, according to the Smithsonian.
A close-up of the hard golden bristles at the ends of E. gigantea's leggy structures.
Bristle worm - 8
Scientists have described 8,000 species of polychaetes, according to the Monterey Bay Aquarium Research Institute (MBARI).
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Jeanna served as editor-in-chief of Live Science. Previously, she was an assistant editor at Scholastic's Science World magazine. Jeanna has an English degree from Salisbury University, a master's degree in biogeochemistry and environmental sciences from the University of Maryland, and a graduate science journalism degree from New York University. She has worked as a biologist in Florida, where she monitored wetlands and did field surveys for endangered species. She also received an ocean sciences journalism fellowship from Woods Hole Oceanographic Institution.