Piranha 3DD is a 2012 American 3D horror comedy film directed by John Gulager and written by Marcus Dunstan and Patrick Melton. It is a sequel to the 2010 film Piranha 3D, part of the Piranha film series, and stars Danielle Panabaker, Matt Bush, David Koechner, Chris Zylka, Katrina Bowden, Gary Busey, Christopher Lloyd, and David Hasselhoff. The events of film take place after those of the previous film and include a school of bloodthirsty piranhas invading a newly opened water park in Arizona.

Danielle Nicole Panabaker is an American actress. She began acting as a teenager and came to prominence for her roles in the Disney films Stuck in the Suburbs (2004), Sky High (2005) and Read It and Weep (2006), and in the HBO miniseries Empire Falls (2005). She won three Young Artist Awards: for guest-starring in an episode of the legal drama television series The Guardian (2004), for her lead role in the TV film Searching for David's Heart (2005) and for her ensemble performance in the family comedy film Yours, Mine & Ours (2005).