Most animals will swim if there is very good reason for them to.
The only animal on Australian general circulation (non-commemorative) coins that is known for swimming is the duck-billed platypus featured on the Australian 20 cent coin.
The rest are not known for their swimming skills -
Many different countries put their native animals on their coins. In Canada we have the bear, moose and loon.
Australia puts famous or historically significant Australian identities or scenes on its banknotes, and distinctive or definitive Australian animals on the reverse of most coins to make the coins and banknotes identifiably and uniquely Australian. There does not seem to be much point to featuring US Presidents, Brazilian animals, Russian statues or Chinese emblems on Australian coins and banknotes, since it would all become very confusing.
The Australian coins, the Australian anthem and the Australian notes.
The original Australian decimal coins were designed by Stuart Devlin and mostly produced by the Royal Australian Mint Canberra.
Nobody keeps a list, but it would be a fair bet that many thousands of coins are damaged either deliberately of accidentally each year. As coins are returned to the bank or the Royal Mint, staff weed out damaged or worn coins and recycle them.
Animals That Swim was created in 1989.
Australian coins have not changed since last year. General circulation coins are - 5, 10, 20 and 50 cents, and $1 and $2 coins.
The first Australian female to swim the English Chanel was Susie Maroney, of NSW in 1991.
There are many places online that one can buy Australian coins as well as many local stores that one can visit. One of the most popular places that one can buy Australian coins is the Australian website perthmint.
There were 4,337,200 Australian 1997 50 cent coins minted.
None. It is illegal to deliberately damage, deface or otherwise mutilate Australian coins.
The reigning British monarch is on the obverse of all Australian coins. Currently, it is Queen Elizabeth II.