How many horses are on each team in a polo match?

Only half , the other half are jockeys

Depends on the depth of the water

4 on each side.

6 Chukkas in the average game.(The more 'professional' the level, the more Chukkas you're required to play)

Each Chukka 7.5 minutes.

24 Horses per team.

Professional players change Horses every 3-4 minutes

Two, it can be more or one

Um eleventy

Hell if i know