Onomatopoeia refers to the creation of words that imitate the sound they are trying to describe. Examples are: tic-toc, lub-dub, quack, mwah.
Onomatopoeia comes from the combination of two greek words that mean "name" and "I make".
Onomatopoeia differs a little bit between languages both in spelling and sometimes even in sound. For example, tic-toc is widely used in English, while tic-tac is used in Spanish; quack is used in English, while cuac is used in Spanish; haha is used in English and jaja is used in Spanish.
Dazzle, in this context, means like a bright light blinding a person temporarily, presumably from the light of the sun reflecting off the sandy surfaces.