Watch: Rare 'flying spaghetti monsters' spotted in recent deep sea expedition

Twenty possible new species were discovered during this expedition along Chile's Nazca Ridge, according to researchers.

Underwater footage shot off the coast of Chile during a 28-day expedition led to the discovery of 20 possible new species amid a thriving deep-sea ecosystem.

The expedition, led by researchers with the Schmidt Ocean Institute, explored the underwater mountain range known as the Nazca Ridge. Among the finds: a rare sighting of a creature commonly known as "flying spaghetti monsters," or Bathyphysa siphonophores.

Another creature, a live Promachoteuthis squid, was filmed for the first time. According to researchers, what’s known about the animal is based on a few collected specimens or from dead samples found in nets. 

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Footage from the expedition provides a clear view of the squid, along with several other creatures.

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This is the first footage of a live Promachoteuthis squid. Until now, the squid genus has only been characterized from dead samples found in nets. The squid was documented on Dive 693, while exploring an unnamed seamount (internally designated as T06) along the Nazca Ridge, off the coast of Chile.  (ROV SuBastian / Schmidt Ocean Institute)

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This is the first time this rare octopus species informally named the Casper octopus — has been seen in the Southern Pacific. Discovered in 2016 and nicknamed Casper, the species has not been scientifically described or formally named, as no one has collected a specimen yet. (ROV SuBastian / Schmidt Ocean Institute)

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This Helicolenus lengerichi (Scorpionfish) was documented on Dive 692 while the science team was surveying an unnamed and unexplored seamount (internally designated as T06) along the Nazca Ridge. An international team of scientists is mapping and characterizing biodiversity along this underwater mountain range in the high seas off the coast of South America.  (ROV SuBastian / Schmidt Ocean Institute)

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A Neolithodes sp. (king crab) with epibiont (Poecilasma sp.) growth was documented on Dive 691 at Shorygin Guyot along the Nazca Ridge off the coast of Chile. (ROV SuBastian / Schmidt Ocean Institute)

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A deep-sea starfish in the genus Hymenaster - thought to be a newly discovered species - is documented on Dive 691 at Shorygin Guyot in The Nazca Ridge, off the coast of Chile.  (ROV SuBastian / Schmidt Ocean Institute)

"The seamounts of the Southeastern Pacific host remarkable biological diversity, with species found nowhere else to date," said Prof. Alex David Rogers, Science Director of Ocean Census.

Another discovery they made involved the underwater mountain range itself – mapping a new underwater mountain, or seamount. 

Nearly 2 miles tall, the mountain is home to a pristine coral garden about the size of three tennis courts, where organisms such as king crabs live.

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"The discovery of a new seamount almost 2 miles tall – almost four times as tall as the Burj Khalifa – with a vibrant ecosystem was very exciting," said Dr. Jyotika Virmani, Co-Chief Scientist and Schmidt Ocean Institute Executive Director "Only 26% of the seafloor has been mapped to this high resolution and each expedition on Falkor (too) brings into focus a little more of the unknown seabed and life on our home planet."