Noah's vs. Gilgamesh floud

In English 12, we read the stories Gilgamesh The Great Floud, and The Noah's Ark from the Bible. They are very similar stories, but also different. They both have animials, a boat in the story. The characters both take birds to find land after the land is flouded. The only thing that I saw that was different was when Enkidu lives forever, but Noah died when he was in his 200s.