Megalodon teeth found in Pacific offer clues to ancient ocean and fearsome predator

An expedition in the Pacific Ocean has yielded a significant discovery: several large teeth belonging to the Megalodon, the largest shark to have ever existed. Researchers from the U.S. National Oceanic and Atmospheric Administration (NOAA) found these fossilized teeth on the ocean floor during the "2026 Cook Islands ROV Exploration" using remotely operated vehicles.

The recovered teeth, some measuring over 13 centimeters (5 inches) in length, are crucial for scientific study. NOAA noted that Megalodons, which went extinct over 3 million years ago, continue to offer valuable insights into past oceanic conditions. "While they went extinct over 3 million years ago (except in movies), their teeth continue to provide us with valuable clues about the oceanic environment," the agency stated.

Sharks, including the Megalodon, possess multiple rows of teeth and continuously shed and replace them throughout their lives. Fossilized fish teeth, like those of the Megalodon, absorb trace elements and rare earth elements from the water and seabed. Scientists can analyze these absorbed elements to reconstruct past ocean circulation patterns.

Additionally, these fossilized teeth often serve as nuclei for polymetallic nodules, where minerals like manganese and iron accumulate over millions of years. The discovery of these Megalodon teeth allows scientists to study their composition in detail, reinforcing current knowledge about this formidable prehistoric predator. NOAA estimates the Megalodon reached lengths of approximately 18 meters (60 feet) and weighed around 50 tons.

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While they went extinct over 3 million years ago (except in movies), their teeth continue to provide us with valuable clues about the oceanic environment.