All modern aquariums are covered with a glass lid or other material to prevent fish from jumping out of the enclosure and suffocating. The reason for this bouncy behavior has nothing to do with the mood of the fish: some owners believe that they are jumping for joy and others that they are simply committing suicide. Neither one nor the other. Ichthyologists – experts in fish – think that the jumps are due to a gesture that these animals carry out in the wild to eliminate the parasites that grow on the surface of the scales and skin. Sometimes the jumps also occur as a consequence of territorial struggles.
Why do fish jump in aquariums?
Japanese scientists create a 'washing machine for humans'
Can you imagine taking a relaxing bath in a machine that washes you with bubbles, plays relaxing music or videos?
Insect swarms generate as much electricity as a thunderstorm
Swarms of bees can generate an electrical charge of 1,000 volts per meter, a higher voltage density than thunderclouds and electrified dust storms.
This is what the Earth's magnetic field sounds like
The shield that protects our planet sounds 'pretty scary', according to ESA engineers.
Days were only 17 hours long 2.46 billion years ago
It was when the Moon was much closer to our planet. As the centuries pass, the Moon slowly recedes and the length of our day gradually lengthens accordingly.
Women are better at doing crosswords
A new study has revealed that women have a 'small but robust' advantage over time.