Hi guys, I have a question that I was hoping someone here might have the answer for, and if so, it would be highly appreciated if you could respond !

What is the specific term for a icon or drawing on a map in the shape of a creature (like a dragon or a kraken) that was put onto old maps to tell sailors that they were sailing into unknown waters? Is there even a specific term for that?

It was brought to my attention by a colleague of mine and I've been wondering ever since.

Thanks in advance for any help!