Researchers have documented the elusive goblin shark alive in its natural habitat on two separate occasions, offering rare glimpses of a species often referred to as a "living fossil." The deep-sea creature, known for its distinctive long snout and protruding jaws, was observed in footage captured in 2019 near Jarvis Island and again in 2024 during an expedition to the Tonga Trench.
Historically, goblin sharks have primarily been observed only after being caught on fishing lines and brought to the surface, where they did not survive. These new sightings provide crucial information about the species' behavior and habitat.
Deep-Sea Encounters
During a 2019 expedition, scientists were reviewing footage from a deep-sea rover operating near Jarvis Island within the Pacific Remote Islands Marine National Monument. After investigating a potential sighting, they confirmed the presence of a goblin shark. The second observation occurred in 2024 in the Tonga Trench.
Professor Alan Jamieson, a co-author of the study, expressed his astonishment at seeing the shark alive, stating it was an honor to witness such a "deep-sea charismatic animal." The observation in the Tonga Trench was particularly noteworthy as the shark was recorded at a depth of approximately 700 meters deeper than previously known for the species, making it the deepest-documented goblin shark.
Aaron Judah, the lead author of the study, was also surprised by the depth at which the goblin shark was found. The team filmed over 50 days of continuous footage during the Tonga Trench expedition, with the goblin shark sighting lasting just over 20 seconds, underscoring the species' elusive nature.
A 'Living Fossil'
The goblin shark (Mitsukurina owstoni) is the sole living representative of its family, a lineage dating back approximately 125 million years, earning it the "living fossil" moniker. Its unique appearance, characterized by a long, prominent snout and extendable jaws used to capture prey, has led to descriptions such as "ridiculously horrendous to look at" by some researchers.
The study's findings aim to highlight the vastness of unexplored ocean environments and the importance of continued natural history research. The expanded geographic and depth range now documented for the goblin shark could inform regional management and biodiversity assessments.