Polopalooza is taking place Saturday and Sunday at the Fresno State Aquatics Center.
Tickets are $15 per day. Students get in free.
The Central California Blood Center will be on-site both days from 9 a.m. until 4 p.m., if you'd like to donate blood.
Donors will receive free entry into Polopalooza.
Action News spoke with coach Natalie Benson and senior Suzanna Martinez about the event.