Some fish can make electricity. They surround themselves with an electrical field. If anything moves in the field, the fish can feel it. Their electrical fields are able to detect food and their enemies.
Invisible enemies
Invisible enemies Researchers have found that animals can pass on
viruses through saliva or immune cells as well as through blood,
and don't necessarily show detectable levels of the virus in their
blood. This means that new strategies will need to be used to
control mosquito- borne illnesses such as malaria and yellow
fever. 29 JANUARY 2000, P. 10
Cool Articles
