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Newly Discovered Glowing Sea Slug Illuminates Depths of Ocean

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Neha

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3 min read

15 Nov, 2024

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Researchers have recently discovered a remarkable new species of glowing sea slug, named Bathydevius Caudactylus, also known as the "mystery mollusk." This unique nudibranch resides in the ocean's midnight zone, a dark and unexplored area that lies between 1,000 to 4,000 meters (3,300 to 13,100 feet) below the surface.


Discovery and Characteristics

The mystery mollusk was first observed in 2000 during an expedition off the coast of Monterey Bay using a remotely operated vehicle (ROV). Initially, its unusual features—including a large gelatinous hood and a paddle-like tail—made it difficult for scientists to classify. 

After years of research and numerous sightings, it was confirmed as a new species of nudibranch.


This sea slug is notable for its bioluminescence, which allows it to glow in the dark depths of the ocean. It has a transparent body that helps it blend into its surroundings and can emit light to distract predators. In one instance, researchers witnessed the creature detach a glowing part of its tail to escape from danger, similar to how some lizards shed their tails.


Unique Adaptations

Unlike typical sea slugs that feed on the seafloor, Bathydevius Caudactylus uses its cavernous hood to trap small crustaceans, functioning much like a Venus flytrap. This adaptation is crucial for survival in the nutrient-scarce environment of the deep sea. 


Genetic Significance

Science Direct


Genetic analysis has shown that this species is distinct enough from other nudibranchs to warrant its own family, Bathydeviidae. This finding highlights the ongoing discoveries being made in deep-sea research and emphasizes the importance of advanced technology in exploring these remote ecosystems. 


Implications for Deep-Sea Research

The Monterey Bay Aquarium Research Institute (MBARI), which led this research, has been at the forefront of deep-sea exploration for over two decades. Their efforts have resulted in the discovery of more than 250 new deep-sea species. Scientists believe that understanding creatures like Bathydevius Caudactylus can provide valuable insights into deep-sea ecosystems and contribute to better ocean conservation practices.


The discovery of the mystery mollusk not only adds to our knowledge of marine biodiversity but also underscores the need for continued exploration and protection of our oceans' hidden depths.


ALSO READ | Antarctic Penguin Makes Historic 2,000-Mile Journey to Australia

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