Eye-opening.

The Crustacean or lobster with an amazingly miniscule brain, yet this creature is able to "see" through walls of dense water obscured by silt and sand... Lobsters have limited image resolution, but possess high sensitivity and the ability to detect fast movement and the polarisation of light.

Over eons, this bottom crawler developed compound eyes to view its world through a large number of long, narrow square-shaped cells, arranged in a spherical array with a 180° field of view. Any light the lobster takes advantage of down there is reflected from very highly reflective walls of the cells over a wide range of angles of incidence to form a fast focus. Each cell captures that small amount of light, which then enters the lobster’s eye from all angles. The light from these cells is then focused to form a single, intensified image.