Sharks are surely not charismatic megafaunas. This term needs no written definition- you feel it:

Killer, but still cute.

Sharks, unfortunately, look like this:

 Save me?

In Singapore, “suay” [pronounced sway] is often used to refer to an unfortunate circumstance. Sharks are just “suay”- they fail in both the looks AND reproduction department. Not the best position to be faced with overfishing.