Question mark of water ripple
Standard License
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Question mark symbol. Blue water ripple in shape of the question mark, metaphor. The question is why? The problem is water.
Author: Plrang Art - All Rights Reserved 
What's in this image
buttonhook
crystal
dillema
eco
enigma
fluid
frozen
hook
hunchback
ice
liquid
mark
miracle
mystery
problem
prompt
puzzle
query
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question mark
riddle
ripple
secret
shape
sign
splash
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water
waves
whatmark
why
wildchar