These eels face their heads in the direction of the tidal current in order to catch and eat the plankton that are carried by its pull. When they sense danger they will immediately hide their entire bodies under the sand. Their bodies are usually half-submerged in the sand, but their total length is around 30 cm.
- Scientific Name
- Heteroconger hassi
- Order: Anguilliformes, Family: Congridae
- South of Kochi Prefecture, Indian Ocean, Pacific Ocean