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janrinok writes:
"The American Association for the Advancement of Science (AAAS) is providing many interesting news items this week. The BBC reports that the Black Ghost Knifefish has inspired construction of a new robot. The robotic fish would be able to swim in underwater situation where it would be impossible or too dangerous for a human to swim."
Read more below.
"'Today, we don't really have underwater robots that work well in really cluttered conditions or in conditions where vision isn't useful,' said Prof Malcolm MacIver. 'Just consider the sunken cruise ship. It is very dangerous to send divers into such situations where the water can be very cloudy.'
It is the special propulsion technique employed by knifefish that the Northwestern researcher primarily wants to copy: the ripples sent through the long fin on the belly. Undulate one way, and the fish will move forward; undulate the other way, and the direction of travel is reversed. Using counter-propagating waves that meet in the middle, the fish will move vertically."
(Score: 2, Informative) by smaug9 on Sunday February 16 2014, @08:03PM
from wikipedia:
The role these FMs have in communication is significant, as black
ghost knifefish have developed jamming avoidance responses, which are
behavioral responses that avoid the overlapping of EOD frequencies
between conspecific individuals to prevent sensory confusion.