Discovery of Dense Aggregations of Stalked Crinoids in Izu-Ogasawara Trench, Japan

  title={Discovery of Dense Aggregations of Stalked Crinoids in Izu-Ogasawara Trench, Japan},
  author={Tatsuo Oji and Yujiro Ogawa and Aaron W. Hunter and Kota Kitazawa},
  booktitle={Zoological science},
Stalked crinoids are recognized as living fossils that typically inhabit modern deep-water environments exceeding 100 m. Previous records of stalked crinoids from hadal depths (exceeding 6000 m) are extremely rare, and no in-situ information has been available. We show here that stalked crinoids live densely on rocky substrates at depths over 9000 m in the Izu-Ogasawara Trench off the eastern coast of Japan, evidenced by underwater photos and videos taken by a remotely operated vehicle. This is… Expand

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