kendo
Kendo is not very popular in the USA and Europe. It can occasionally be seen elsewhere, but is often found in cities with sizable Japanese immigrant populations.
Kendo
Sumo wrestlings would be a popular Japanese sport though that popularity has been on a decline. Judo, Kendo and Karate may also count though they double as a martial arts.
In Australia the 3rd most popular sport is ultimate frisbee. it is behind soccer and rugby
The Japanese use a bamboo sword in a sport called "kendo".
Swimming
kendo
Baseball is very popular in Japan, as is soccer and traditional Japanese sports such as Kendo, Sumo, and various martial arts.
Yes, surfing is a very popular sport in Australia.
One popular sport in Australia is soccer
Sailing is definitely one of them.