they are Olympic records and there are list of them in the link below.
Michael Phelps
32 new world records were set and there were also new Olympic records set with 11 just in the 47 athletic events and 20 more in the 34 swimming events. There are also many other records for World Junior, Asia, African, European, Country and individual records
9 Olympic gold medals for swimming and broke seven records
I believe they keep the temperature of an olympic pool at 25-28C (77-82F).
yes swimming is an olympic event
Yes, there were several world records set at the 1948 Olympic Games in London. Notable world records were achieved in events such as athletics, swimming, weightlifting, and cycling.
As of now, American swimmer Michael Phelps holds the most Olympic records, with 23 gold medals and 39 world records in swimming.
the 1st olympic swimming pool was in 1899.
Micheal Phelps-8 gold-swimming-America 7 world records-1 olympic record
a swimming stroke
No, swimming is only in the Summer Olympic Games
He set 8 Olympic records at the Beijing Olympic games.