Extra bits meant to add to the Blue Seed story. Episodes 1-13 are extras shown on the video releases of Blue Seed in Japan. They take place after every other episode, such as Omake 1 follows episode 2. Episode 14 is an extra featured with OVA Blue Seed 1.5.
GoGoAnime is the best site to watch
Blue Seed Omake SUB online, or you can even watch
Blue Seed Omake DUB in HD quality. You can also find
Production I.G anime on GoGoAnime website.