The newly discovered spider called the dolomedes briangreenei hails from, you guessed it, Australia. One of it's species, whose name is Brian, was presented at the World Science Festival in Brisbane.
He was named after Professor Brian Greene, cofounder of the World Science Festival and a string theorist. 
Brian (the spider, not the string theorist) uses vibrations in the water to fish. Robert Raven, Principal Scientist of Arachnology at the Queensland Museum told Mashable:
These spiders sit there on the water and then all of a sudden an insect will hit the water and the spider races out to get it, grabs it, dives under the water and then swims back to the shore and starts eating it.
It eats insects, fish and toads up to three times it's own size. Apparently its bites aren't that dangerous but the fact remains; now even the water is not safe from spiders.
