In this overhead view of a stream bed at night, the white line shows the path taken by a longfin eel searching for food (red dot). It navigated in total darkness and used the odour plume coming downstream from the food. Researchers found that eels detecting the odour plume immediately swam quickly upstream, and if they lost the scent they swam more slowly across the stream until they found the food.
Using this item
This item has been provided for private study purposes (such as school projects, family and local history research) and any published reproduction (print or electronic) may infringe copyright law. It is the responsibility of the user of any material to obtain clearance from the copyright holder.