[pvaldes]

Things that remember us other things would be a better description probably. This is pretty random sometimes and can lead scholars to mistakes. To say that Haliotis mimick a rock because iridiscence is like to say that people pretend to be beans because they have kidneys. Iridiscence in living Haliotis is always hidden. This is not a correct example of camouflage in nature.

Moth-mimicking fly is also an incorrect example. They are very different animals that can not be confused with moths because they are minute. As a lot of minute insects they have long hairs in their microscopic wings for a physical reason: to be able to fly/float. Not camouflage intended here.

"Send us suggestions":

Gravel mimicking plants: entire gravel: Lithops, fracturated gravel: Pleiospilus

Rock mimicking plants: Ariocarpus

Coarse Sand mimicking plants: Titanopsis

And the cetaceans that mimick white sharks are also very cool. Very impressive if you are next to them. See Kogia.