Answer:
I'm really blue but when you see me I'm red. You don't see me too often. I'm there for you if you're hurt.
I am found in the sea and on land but I do not walk or swim. I travel by foot but I am toeless. No matter where I go, I am never far from home. What am I?
I am a pretty one, fluttering in the pale blue sky. Delicate, fragile on the wing, indeed I am a pretty thing. What am I?
You throw me away, I find my way back. Traditionally, I'm wooden with an arch in my back. What am I?
I am a protector. I sit on a bridge. One person can see right through me, while others wonder what I hide. What am I?
Nothing specific, but more than a few. This many clustered, together will do.