Along with volleyball competitions, the features Australia's top DJs and ice-cold beverages.

Sponsor Corona has added an extra element to the day's festivities, with the Corona Fashions on the Beach competition.

Entrants are encouraged to come up with wacky team uniforms to win some great additional prizes.

This year's theme is op shop, so go for vintage glam or thrifty threads.

Slam founder Andrew Lemon said the festival was inspired by the beach volleyball event at the 2000 Sydney Olympics.

The first event was at Palm Beach that year.

"Part beach party, part volleyball clash and part music festival, Slam embodies everything we love about our nation, is the only one of its kind in Australia and is the definitive beach event to be seen at this summer,'' Mr Lemon said.

Team check-in starts at 9am, with games starting at 10.30am.

The Corona Beach Bash is on from noon until 7pm at the Wanda Surf Life Saving Club. The entertainment line-up includes Rob Kay, Knickers, Lemz, Grant Streeter, TY, Dazzla and Dj Willie Sabor.

Details: To register your team or buy tickets

to the after-party: www.slamfestival.com.au.