Meet Loki the Sea Cucumber, One of 57 Newly Discovered Deep-Sea Species
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A recent deep-sea exploration off the coast of Argentina has uncovered 57 new marine species and 5 new genera, shedding light on the vast mysteries of the underwater world. Among the most intriguing discoveries is a peculiar creature named Loki the Sea Cucumber, for its distinctive horned appendages. This translucent, shimmering blob inhabits the sea floor, feeding by filtering sustenance from its surroundings.
Measuring approximately 3.9 inches in length and 1.2 inches in width, Loki could easily be held in the palm of one hand.
The 21-day expedition, conducted by scientists from the Ocean Census Network and the Schmidt Ocean Institute in August 2025, utilized a remotely operated vehicle to explore the Mar del Plata Canyon. Nestled almost twice as deep as the Grand Canyon, this underwater chasm is a vibrant hub of marine life due to its strategic location where warm subtropical currents converge with colder Antarctic waters. These nutrient-rich waters sustain a diverse array of creatures.
Among the other noteworthy findings is a new species of bamboo coral belonging to the Orstomisis genus, distinguished by its striking orange-red branches that act as natural food traps. Additionally, the researchers encountered a novel species of sea pen at the deepest point of their exploration. The viral nature of the initial expedition, which featured live streams averaging 500,000 views over three weeks, underscores public fascination with these remote underwater environments.
However, the discovery of discarded human items such as shoes, plastic bags, and fishing gear underscores the pervasive impact of human activity on even the most remote parts of the ocean.
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