Answer:
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.
I am the yellow hem of the sea's blue skirt.
They come in many varieties: Red, Black, Dead, and Caspian to name a few.
Which weighs more? A pound of iron or a pound of feathers?
Can describe a distress signal or flashy accessories.
I have two eyes in the front and a lot of eyes on my tail
Easy
Animal
Difficult
Food
Funny
Kids
Logic
What am I?