Eudistylia polymorpha (Johnson 1901)的圖片
描述：
This worm detects any shadow and rapidly retreats into its parchment tube. Depth 15 m.
來源資訊
- 許可
- cc-by-nc-sa-3.0
- 版權
- 2005 California Academy of Sciences
This worm detects any shadow and rapidly retreats into its parchment tube. Depth 15 m.
