It's baffling that this film hasn't received more attention as possibly the most egregious misstep in the killer shark movie category. While _2-Headed Shark Attack_ was undeniably terrible—and it truly was awful—the animators made a glaring error during the final scene that genuinely shocked me. I actually had to go back and rewatch, because I couldn't believe they would overlook something so basic, especially considering it’s right there in the title. But unfortunately, they did substitute a standard shark model for the two-headed one. My rating is ½ - So bad it’s offensive. The experience was deeply unsettling, and I don’t know if I’ll ever be quite the same.

Source on TMDB