In The Little Mermaid 2 Return To The Sea there is a scene and the main antagonist in where a little penguin is on an ice floe and a fierce Hammerhead Shark is circling it with evil intentions brewing in his mind. He did not have a name in the movie and he had a very large dorsal fin making him easily recognisable. Thankfully however he was unsuccessful in acheiving his goal because a huge ice rock fell on him either killing or rendering him toothless. He is voiced by Frank Welker. 
Screenshot 2016-05-15 at 8.47.26 PM