What kind of natural background would a shrimp use for camoflauge?

Answer 1

The shrimp is usually well camouflaged with it's surroundings. Many plants, weeds, and algae causes most shrimp to appear as various shades of green, and sometimes into shades of bluish hues. Shrimps usually hide in the "Chara weeds".

Shrimps have camouflage coloration. They can have several patterns with all forms of disruptive coloration.The stripes and splotches of the shrimp can break up its outline making it difficult to recognize when viewed against a background which is variable in color and tone.(Their coloration however disappear during the nights due to the concentration of pigments in chromatophores.)

Other backgrounds they use for camouflage include sand substrate, rocks, shell gravel, sea grass, and stones.

Answer 2

Sand, rock... Shrimps are nearly transparent when alive. They only turn pink after you cook them.