Today a new exclusive red band trailer from Dimension Film's Piranha 3DD, directed by John Gulager and written by Marcus Dunstan, Patrick Melton and Joel Soisson, has been released.
The sequel stars Danielle Panabaker, Matt Bush, Chris Zylka, David Koechner, Meagan Tandy, Paul James Jordan, Jean-Luc Bilodeau, Hector Jimenez, Adrian Martinez, Clu Gulager, Gary Busey, Katrina Bowden, Ving Rhames, Christopher Lloyd and Paul Scheer.

Here's the official synopsis for the film
After the terror unleashed on Lake Victoria in PIRANHA 3D, the pre-historic school of blood thirsty piranhas are back. This time, no one is safe from the flesh eating fish as they sink their razor sharp teeth into the visitors of summer's best attraction, The Big Wet Water Park. Christopher Lloyd (BACK TO THE FUTURE) reprises his role as the eccentric piranha expert with survivor Paul Scheer (THE LEAGUE) and a partially devoured Ving Rhames (PULP FICTION) back for more fish frenzy. David Hasselhoff trades in the sandy beaches of “Baywatch” to be a celebrity lifeguard at the racy water park.
Piranha 3DD is slated for a June 1st, 2012. release.