I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

The more of this there is, the less you see. What is it?

I live in a bowl. I can swim. I have a tail. I also have fins and big eyes. What am I?

If six children and two dogs were under an umbrella, how come none of them got wet?

The dirtier I get, the whiter I look. Who am I?

There are five vowels (a, e, i, o, u) in the English language.
Can you tell us a word that contains all these vowels?

I am a five-letter word and comprises two different vowels and three same consonants. I am so strong that I can spoil your entire work.

Can you find out who am I?

They came out at night, without being called.
They lost at day, without being stolen.
Who are they?

What has six faces, but does not wear makeup, has twenty-one eyes, but cannot see?

I am a type of vehicle that has two wheels and is powered by humans. What am I?
Hint 1: You can ride me for exercise.
Hint 2: I am environment-friendly.