Turned them to stone if tthey saw it directly. If it was seen reflected in something, e.g. a shield, they were fine.
It isn't always the same in Greek art... however, the most common is probably the gorgoneion (head of Medusa).
A helmet is a head gear that was worn by the Greek soldiers. It was meant to shield the head against attacks from enemies.
Aegies, Spears, Helmets, Owl, Serpents, Olive trees, Armours and Gorgoneion.
the hammer head shake and HUMANS!
Brown hyena's I have head are one of the geckos enemies.
They warn enemies by opening the patch below their head and seems to be bigger in size to enemies.
In Ancient Greece a Gorgoneion (or stone head, engraving, or drawing of a Gorgon face, often with snakes protruding wildly and the tongue sticking out between her fangs) frequently was used as an apotropaic symbol and placed on doors, walls, floors, coins, shields, breastplates, and tombstones in the hopes of warding off evil. In this regard Gorgoneia are similar to the sometimes grotesque faces on Chinese soldiers' shields, also used generally as an amulet, a protection against the evil eye.source:http://en.wikipedia.org/wiki/Gorgon
Normal Sharks...
The giant squid
Athena, the Greek goddess of wisdom and warfare, is often associated with several symbols, the most notable being the owl, representing wisdom and knowledge. The olive tree symbolizes peace and prosperity, as it was gifted to the city of Athens. Additionally, she is frequently depicted with a shield (Aegis) and a helmet, emphasizing her martial aspects. Other symbols include the Gorgoneion, a representation of Medusa’s head, which was believed to offer protection.
Yes. Otocephaly does mean ear-head in Greek. It is also a type of head disorder.
With a bag on it's head.