5. Christmas Tree Worms
Spirobranchus giganteus, commonly known as Christmas tree worms, are tube-building polychaete worms belonging to the family Serpulidae. That’s science talk for sea worms that have two relatively massive crowns that look like Christmas trees.
They live almost entirely in tropical oceans, especially the Caribbean and Pacific oceans, where they mostly hang out in coral reefs, boring into the head of live coral and filter feed by using their brightly coloured tentacles to attract prey. They’re pretty common and aren’t considered to be in danger, and are a common sight in coral aquariums.
Not everything has to be terrifying to be cool.
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