Katy Perry promises 'lion and sharks' at Super Bowl

Singer Katy Perry. Photo / AP

Katy Perry says her much hyped Super Bowl halftime performance will be a Roaring success - literally.

The singer has told reporters at a press conference that her show on Sunday will include "a lion and sharks".

The 30-year-old says she feels blessed to perform on the Super Bowl stage "at such a young age".

She said she enjoyed past Super Bowl performances from Beyonce and Madonna, and what she adds "is some lightheartedness".

Lenny Kravitz will join the pop star at the University of Phoenix Stadium in Arizona.

Perry says her performance will also include an "old school" female singer.

When asked if Perry had been checking out football players this week, she imitated Seattle Seahawks running back Marshawn Lynch, saying: "I'm just here so I don't get fined."

- AP