The below link has a list for your enjoyment.
Of course they did. The Greek are famous for the myths about the Greek Gods. You know Zeus King of all Gods, or Aphrodite goddess of love and beauty. Athena goddess of strategies of war and knowledge who came from one of Zeus's headaches. There are many myths that the greek have come up with.
They were their religion.
greeks made it up
The Greeks did. They live in Greece.
All people- not just the Greeks- created myths to explain things they did not understand. If something SOUNDED like a good answer, they kept it until something better came along.
it may come from some dinosaur bones that were dug up and mistook for dragons
most medieval myths say they live up to 150-200 years.
Greek myths were the center of Greek life because people made up stories to explain why things happen, when people got scared about something they would make up a story to face their fear, and they made up stories about heros, gods, and goddesses.
No Their are no mermaids, people have made them up in fairy tales and Greek myths.
you don't they just made the people up
You do not seem to understand you are talking about the ancient Greek religion. Of course the stories about their gods were not made up by any one person. We call some religious stories myths (not only the Greek ones) because we do not believe in them.
Well if your on about mythical creatures for the Greek times, go on google images and type in ' mythical Greek monsters' it shall come up with mythical ones but if your on about real life well you can't be there not real only myths!