Giant Squid Discovered Lurking off the Australian Coast
Nautilus | Science • • world
Key Points:
- Researchers from Curtin University used environmental DNA (eDNA) sampling to study marine life off Western Australia's Ningaloo Coast, analyzing over 1,700 liters of seawater from various depths.
- They detected DNA from rare and elusive species including Cuvier’s beaked whale, pygmy sperm whale, sleeper shark, faceless cusk eel, and slender snaggletooth, some not previously known to inhabit these waters.
- The study marked the first detection of giant squid (Architeuthis dux) off Western Australia's coast using eDNA, representing the northernmost record of this species in the eastern Indian Ocean.
- In total, 226 species from 126 families were identified, with many DNA sequences not matching any known species, suggesting a vast, unexplored deep-sea biodiversity.
- The findings highlight the potential of eDNA as a non-invasive tool to uncover and monitor elusive marine species in challenging deep-sea environments.
