Well considering that there are (counting on fingers...) 18 events (13 individual events and 5 relays) and a male and female record for each, and then a long course meters set of records and a short course meters set of records, you see that this is a large number of times to update. (72 records) I suggest you take a look at FINA's official record page
http://www.fina.org/swimming/records/index.php
or browse Wikipedia. I will not post WRs in an uneditable post, because 2008 is an Olympic year and every WR is breakable this year.
=How fast does a squid swim?==they can swim really fast=
A penguin can swim as fast as a seal
it can swim as fast as a jet
Dolphin swim fast so they can catch there prey
swim well
he can swim just as fast as any other penguin so not very fast then
they swim fast because that's how they are!
They can swim rather fast, it just depends on the leopard.
fast
It depends on how fast of a swimmer you are.
a snake can swim about as fast as a row Boat at traveling comfortable pace
it can swim 4566666 mph