If you mean strokes then there are four main ones...
But by types you probably mean: Speed, and Synchronised.
Speed Swimming is when you do a certain distance and swim it as fast as you can.
Synchronised Swimming is when you make a routine up with music either by your self or with others.
There are 4 different strokes in indoor competitive swimming. These strokes are contested in various distances and combinations, and can be individual events or relays.
Freestyle (front crawl) - 50m, 100m, 200m, 400m, 800m (women)/1500m (men)
Breaststroke - 100m, 200m
Backstroke (back crawl) - 100m, 200m
Butterfly - 100m, 200m
Individual Medley (IM: equal parts butterfly, backstroke, breaststroke and freestyle in that order) - 200m, 400m
4x100m Medley Relay (backstroke, breaststroke, butterfly and freestyle in that order)
4x100m Freestyle Relay
4x200m Freestyle Relay
The Olympics also host a fairly new 10-kilometre open water swim.
In total, there are 17 different swimming events hosted at the Olympics (16 for each gender, as men's 800m freestyle and women's 1500m freestyle are not contested): 14 individual events and 3 relays.
There are only two types of swimming: speed and synchronized. Both are in the Olympics.
There are Front crawl, Backstroke, Breaststroke and Butterfly.
There are 4 different styles of swimming. And they are Butterfly, Backstroke, Breastroke, and Freestyle.
There are many types of swimming. There are 4 official swimming strokes. They are freestyle, backstroke, breaststroke, and butterfly.
there is much more
three
4; backstroke,Frontcrawl,Breastroke and butterfly
There are many types of materials used in the construction of swimming pools. They can include Metal, Plastic, Concrete, Fiberglass, a Vinyl Liner or PVC
it came from in side your poo
Butterfly Backstroke Breaststroke Frontcrawl / freestyle
prone float, supine float,
of all types, about 500 billion are swimming in oceans right now
There are many types of good aerobic exercises. Some of these include biking, swimming, running, dancing, as well as walking.
Swimming, Walking, Jogging, Biking, Running.
Endurance
scuba diving,snorkeling,surfing,swimming
swimming baths,gym,places like that
There are many swimming pools in Dublin.