It depends on how fast of a swimmer you are.
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.
It depends on which event you want to know.
And male or female.
a swimmer should be a able to go 25 meters/yards (1 lap) in less than 30 seconds. although most competitive swimmers do it in 15-20 seconds.
it depends on the distance .but the fastest ever was 2.93 meters per second
The fastest recorded swimming is 2.35 m/s (roughly 4.5 mp/h), this was recorded in 2008 by 2 people.
20 mile an hour
he goes 13mph
=How fast does a squid swim?==they can swim really fast=
A penguin can swim as fast as a seal
Dolphin swim fast so they can catch there prey
it can swim as fast as a jet
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.
It depends on how fast of a swimmer you are.
fast
a snake can swim about as fast as a row Boat at traveling comfortable pace
they swim fast with many of the dorsal fins.