Set to the MIT Chamber Chorus performing O Fortuna from Carmina Burana, this is a Protula bispiralis or red fan worm opening in real time. The clip is via marine biologist Christopher Mah who suggests that “you will probably never see a more dramatic opening for a serpulid polychaete than this video.” It’s true.

Watch more incredible marine life: Slow Life: Incredible macro video of fluorescing corals & sponges and Ocean sponges have incredible filtering power. Plus, all kinds of worms.

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