Disapparent

It is above the power of a naturall cause to make a man invisible: no naturall cause can effect this, because man is an opake or an obscure body, and such a body as hath no perspicuity or transparency at all in it: and therefore it cannot possibly be, that it should be made inconspicuous or disapparent without some present impediment. Boet.

Finally, Chthamalus challengeri was characteristic of nip and high wave-exposure environments, given its exclusive appearences in these locations. However, as the degree of exposure depends on the scale of wash through the platform, it is directly limited by the microtopographic properties of low-tide platforms. Specific environmental influences such as exposure and height above the datum-plane were rather disapparent.