Sharks use snot to hunt prey

Sharks use a gel-like substance on their heads to pick up electrical signals from the water, possibly to follow a bloody trail

There are several reports of swimmers towing wounded mates to shore, with the shark still going after the injured person instead of the rescuer, says Fields.However, the findings negate an earlier study, published in the journal Nature, which says shark gel serves as a semiconductor, generating electricity in response to temperature changes.

First, find your snot

For his own work, Fields and colleagues extracted the gel from skate pores."So the gel is nothing but a conductor that allows electrical signals to move from the membrane to the brain,"

Hunting with snot

Imagine that a shark is swimming between two points of a 1.5 volt battery, with one battery end dipped into Long Island Sound and the other located in the waters off of Jacksonville, Florida

As a result, Australia is the country that have many amazing animal that we have never seen before. By the way, it like a symbol of this country show that they have a perfect environment.

http://www.abc.net.au/science/news